Suchomimus

    Suchomimus was a huge, meat-eating dinosaur with a crocodile-like mouth that lived 110 to 120 million years past, during the middle Cretaceous time.Characteristics and environment Unlike most giant theropods, Suchomimus had a much extended, low snout and narrow jaws studded with some 100 teeth, not very sharp and curving somewhat backward. The tip of the snout was distended and carried a "rosette" of longer teeth. The animal is reminiscent of crocodilians that eat mainly fish, such as the living gharial, a type of large crocodile with a much extended, slim snout, from the region of India.
   Suchomimus also had a tall additional room of its vertebrae which may have held up some kind of low flap, ridge or sail of skin, as seen in much more overstated form in Spinosaurus. The overall impression is of a huge and powerful creature that ate fish and meat more than 100 million years ago, when the Sahara was a lush, swampy habitat.
  
    Suchomimus has been placed in the middle of the spinosaurs, a group of predators. Apart from the back ridge, Suchomimus was very alike to Baryonyx which also had strong forelimbs and a enormous sickle-curved claw on its "thumb". And, as with Baryonyx, the claw was the first fossil part to be noticed by palaeontologists. Suchomimus was significantly larger than Baryonyx, but the latter might approximately have been a juvenile of the former. Detailed study shows that the specimen of Suchomimus was itself not fully grown when it died.
   After discovering new specimens of Carcharodontosaurus and the SuperCroc, Chicago-based palaeontologist Paul Sereno and his team additional a discovery in 1997. In the Sahara, near the Tenere Desert in Niger, they establish fossils that represented about two-thirds of the skeleton of an enormous meat-eater. This was named Suchomimus ("crocodile mimic") after the shape of its head.

Sarcosuchus

     Nicknamed the SuperCroc, the primitive Sarcosuchus imperator (pronounced SAR-koh-SOO-kiss IM-peh-RAH-tor and meaning “flesh crocodile emperor” from the early Cretaceous of Africa is one of the main giant crocodile-like reptiles that ever lived. It was almost twice as long as the largest modern crocodile, and weighed up to 10 times as much.
Until recently, all that was known of the species was a few fossilized teeth and armor plates, which were exposed in the Sahara Desert by the French paleontologist Albert-Félix de Lapparent in the 1940s or 1950s. However, in 1997 and 2000, Paul Sereno discovered a half a dozen new specimens, counting one with about half the skeleton intact, and most of the spine. All of the other giant crocodiles are recognized only from a few partial skulls, so which is actually the biggest is an open question.
   When fully mature, the SuperCroc was as extended as a city bus (11–12 m, or 37–40 ft), and weighed up to 8,000 kg (8.8 short tons), as much as the major known terrestrial carnivore, the dinosaur Giganotosaurus.    
     The saltwater crocodile is the largest modern species, and only reaches half that length (6.3 m, or 20.7 ft, is the longest long-established individual), and a small fraction of the weight (1,000 kg, or 1.1 tons).The largest SuperCroc was the oldest, because it kept rising through its entire 50–60 year lifespan. Modern crocodiles grow at a rapid rate, attainment their adult size in about a decade, and then grow more slowly afterwards. The SuperCroc probably grew at the same rate, but kept growing for up to 40 years before reaching its full adult size.
    Its jaws alone were as big as a human adult (1.8 m, or 6 ft). The upper jaw overlaps the lower jaw, creating an overbite, and together was narrow. The snout composes about 75 percent of the skull's length.
It’s contained 132 thick teeth (Larsson said they were like "railroad spikes"). The teeth are conical and designed for grabbing and holding, instead of being narrow and designed for slashing (like the teeth of most land-dwelling carnivores). It could probably exert a force of 18,000 lbf (80 kN) with its jaw, making very improbable that prey could escape.

Rajasaurus

       Rajasaurus narmadensis is a bipedal theropod dinosaur recognized by Chicago paleontologists Paul Sereno and Jeff Wilson. The bones had been excavated in 1983 by a joint Indo-American group, counting members from the University of Michigan, University of Chicago, and the Punjab University of Northern India, working in India's Narmada valley.In news let go from the University of Chicago dated August 13, 2003, Rajasaurus narmadensis is described as a "stocky, carnivorous dinosaur with a strange head crest....
     The discovery represents the first skull ever assembled of a dinosaur of any kind in India." It almost certainly had a small horn. While the skull is unfinished, the pieces found include the jaws and brain case. The specimen is predictable to have been about 25-30 feet long. The bones are dated at 65 million years old, putting them at the end of the Cretaceous.The name Rajasaurus narmadensis means "regal dinosaur from the Narmada." The bones were establish near the Narmada River in western India.

Noasaurus

    Noasaurus belongs to the family Noasauridae where Noasaurids be a grouping of theropod dinosaurs from the Cretaceous Period. It’s generally small in size and very much similar to the Abelisauridae.
The theropod family’s Abelisauridae and Noasauridae were closely interrelated because of shared derived characters such as the preantorbital fenestra, the short anterior area of the maxilla, the quadrate fused to the quadratojugal and cervical vertebrae with vestigial neural spines and hypertrophied epipophyses. Noasaurus was described by Bonaparte and Powell in 1980.
    Fossils of noassaurus have been found in natural history musuem, Argentina. Basically it was  small (fewer than eight feet long) theropod, particularly a ceratosaur, discovered by Jaime Powell and José Bonaparte from the Lecho Formation of Salta Province, Argentina. It was a close comparative of the larger abelisaurids. They both were derived from the same basal abelisauroid ancestor.Noasaurus situated distant prey by smell, would come near and wait in trap, judge distance, then rush in rapid explode of speed.

Noasaurus facts:
Name:     Noasaurus (Northwestern Argentina lizard)
Size:     4feet long and 1.5ft tall
Main Facts:     Noasaurus Dinosaurs mainly attack using kicks and lacerate with huge pedal claw.

Saurornitholes

     Saurornitholestes langstoni (Langston's lizard-bird thief) is a coyote-sized carnivorous dromaeosaurid dinosaur genus from the Upper Cretaceous (Upper Campanian) of Alberta, Canada. Several incomplete skeletons, dozens of isolated bones, and scores of teeth are known from the badlands of Dinosaur Provincial Park in Albertamost of these are housed at the Royal Tyrrell Museum of Palaeontology, in Drumheller, Alberta.
Like other theropods in the family Dromaeosauridae, Saurornitholestes had a extended, curving, bladelike claw on the second toe. Saurornitholestes was more long-legged and flippantly built than other dromaeosaurids such as Velociraptor and Dromaeosaurus. It resembles Velociraptor in having large, fanglike teeth in the face of the jaws. Saurornitholestes most intimately resembles Velociraptor, although the precise relationships of the Dromaeosauridae are still comparatively poorly understood.
    Saurornitholestes appears to have been the most ordinary small theropod in dinosaur Provincial Park and teeth and bones are much more ordinary than those of its more massive contemporary, Dromaeosaurus. Little is known about what it ate and how it lived, but a tooth of Saurornitholestes has been found entrenched in the wing bone of the pterosaur Quetzalcoatlus. Whether it in fact killed the pterosaur or merely scavenged an already dead animal is unknown.
Similar teeth are established in younger deposits, but whether they stand for S. langstoni or a different, related species is unknown.

Saurornitholestes Facts:
Name:     Saurornitholestes
Size:    
1, 8 m. (6 ft.)
Main Facts:     It is also called as "Langston's lizard-bird thief".Saurornitholestes most intimately resembles Velociraptor, although the precise relationships of the Dromaeosauridae are still comparatively poorly understood.

Velociraptor

     Velociraptor mongoliensis ("fast thief"), was an agile and slim theropod dinosaur species from the Upper Cretaceous (Campanian) with an up-curved skull and big sickle-shaped claws. They are usually known as raptors, a name which can also refer to other dromaeosaurids.
    Velociraptors had physically powerful jaws with rows of bladed teeth. These, in combination with huge claws on their forelimbs and sickle-shaped talons on the second toe (the size of these claws could arrive at up to the length of the teeth on extinct saber-toothed cats), gave the animals some imposing weaponry.
In 2005, a BBC documentary, The Truth About Killer Dinosaurs, created an false Velociraptor leg and sickle claw to show the claw's power - when tested on a pork belly, the claw failed to fully penetrate it, representative that the popular notion of Velociraptor using the claw to disembowel its prey (as in the movie Jurassic Park) was false.
    Evidence as to how the claw was in fact used is provided by one of the more spectacular specimens of Velociraptor, establish in the Gobi desert in 1971. It is a complete, spoken skeleton clutching the skeleton of a Protoceratops. The penetrating toe claw is close to where the Protoceratops's jugular vein would have been, and the Velociraptor's arm is clutched in the herbivore's jaws. This suggests Velociraptor used its sickle claw for exactitude killing, to pierce its victim's jugular vein or windpipe. The dinosaurs may have been wedged in a sandstorm, or buried as a sand dune fell on top of them. Another understanding is that Velociraptor grabbed the dead carcass of Protoceratops (which seems to be missing a leg) throughout a sandstorm or flash flood.
Velociraptor was first establish and described by paleontologist H. F. Osborn in Mongolia in 1924. About a dozen Velociraptor fossils have been establish, including one who died in a battle to the bereavement with Protoceratops and two baby bird Velociraptor skulls that were establish near an oviraptorid nest in Mongolia (they may have been a meal). Fossils have been establish in Mongolia, Russia, and China. The skull of Velociraptor are displayed at the American Museum of Natural History.

Velociraptor facts:
Name:     Velociraptor
Size:     1.8 m. (6 ft.) long and 1 m. (3ft.) tall
Main Facts:     It is also called as "fast thief".Velociraptor uses its sickle claw for exactitude killing, to pierce its victim's jugular vein or windpipe.

Stenonychosaurus

     Stenonychosaurus (type genus S. inequalis) was named by C.M. Sternberg in 1932, based on a foot, wreckage of a hand, and some caudal vertebrae from the Late Cretaceous of Alberta. An extraordinary feature of these remains was the distended claw on the second toe, now recognized as trait of Deinonychosauria. Sternberg initially classified Stenonychosaurus as a associate of the family Coeluridae within the theropod dinosaurs. Later, Sternberg (1951) speculated that since Stenonychosaurus had a "very peculiar pes" and Troodon "equally strange teeth", they may be closely related. Unluckily, no comparable specimens were obtainable at that time to test the idea.
    A more whole skeleton of Stenonychosaurus was described by D.A. Russell in 1969, which eventually shaped the scientific foundation for a famous life-sized sculpture of Stenonychosaurus accompany by its fictional, human-like descendant, the "dinosauroid". Stenonychosaurus became a well-known theropod in the 1980s, when the feet and braincase were described in more elements. It is sometimes listed as the "most intelligent" of dinosaurs. P.J. Currie reviewing the known Troodontidae in 1987, reclassified Stenonychosaurus inequalis as a junior synonym of Troodon formosus. This synonomy has been extensively adopted by other paleontologists, and therefore all of the specimens once called Stenonychosaurus are now referred to as Troodon in the recent scientific text. Other taxa "lumped" into Troodon are Pectinodon bakkeri and Polyodontosaurus grandis, which, the length of with Stenonychosaurus inequalis may all be separate suitable species, or belonging to one genus or species.

Stenonychosaurus Facts:
Name:     Stenonychosaurus
Size:    
6ft 6 inch/2m long
Main Facts:     This was the "Brainiest Dinosaur" among all.It's brainn was larger than the modern Emu.

Saurornitholestes

     Saurornitholestes langstoni (Langston's lizard-bird thief) is a coyote-sized carnivorous dromaeosaurid dinosaur genus from the Upper Cretaceous (Upper Campanian) of Alberta, Canada. Several incomplete skeletons, dozens of isolated bones, and scores of teeth are known from the badlands of Dinosaur Provincial Park in Albertamost of these are housed at the Royal Tyrrell Museum of Palaeontology, in Drumheller, Alberta.
     Like other theropods in the family Dromaeosauridae, Saurornitholestes had a extended, curving, bladelike claw on the second toe.              
     Saurornitholestes was more long-legged and flippantly built than other dromaeosaurids such as Velociraptor and Dromaeosaurus. It resembles Velociraptor in having large, fanglike teeth in the face of the jaws. Saurornitholestes most intimately resembles Velociraptor, although the precise relationships of the Dromaeosauridae are still comparatively poorly understood.
Saurornitholestes appears to have been the most ordinary small theropod in dinosaur Provincial Park and teeth and bones are much more ordinary than those of its more massive contemporary, Dromaeosaurus. Little is known about what it ate and how it lived, but a tooth of Saurornitholestes has been found entrenched in the wing bone of the pterosaur Quetzalcoatlus. Whether it in fact killed the pterosaur or merely scavenged an already dead animal is unknown.
    Similar teeth are established in younger deposits, but whether they stand for S. langstoni or a different, related species is unknown.

Saurornitholestes Facts:
Name:     Saurornitholestes
Size:    
1, 8 m. (6 ft.)
Main Facts:     It is also called as "Langston's lizard-bird thief".Saurornitholestes most intimately resembles Velociraptor, although the precise relationships of the Dromaeosauridae are still comparatively poorly understood.

Dromaeosaurus

    Dromaeosaurus ("running lizard") is a wolf-sized theropod dinosaur type from the Upper Cretaceous (Upper Campanian) of Alberta, Canada. It is first and foremost known from a partial skull and other bones (foot fragments, toe claw) composed in what are now Dinosaur Provincial Park, Alberta, as well as dozens of isolated teeth.
     Dromaeosaurus differs from most other Dromaeosauridae in having a short, huge skull, a deep mandible, and huge, straight teeth. In these respects Dromaeosaurus resembles the limb, they indicate that Dromaeosaurus was a fairly massive  animal for its size. Accurately how it lived and what it ate are still open to speculation. The teeth show fairly heavy wear and seem to be used for devastating and tearing rather than slicing through flesh; it is possible that Dromaeosaurus was more of a scavenger than other small theropods.The relationships of Dromaeosaurus are indistinct. Although its rugged build gives it a primitive appearance, it is actually a very particular animal. It is usually given its own subfamily, the Dromaeosaurinae; this group is consideration to include Utahraptor, Achillobator, Adasaurus and perhaps Deinonychus. However, the relationships of dromaeosaurs are still in a state of flux.The type species is D. albertensis. The other species, lacking in material, may well be synonymous with it.

Dromaeosaurus Facts:
Name:     Dromeosaurus
Size:    
5.4feet
Main Facts:     The type species of Dromaeosaurus is D. albertensis. The other species, lacking in material, may well be synonymous with it.
 

Deinonychus

      Deinonychus antirrhopus ("counterbalancing terrible claw") is a wolf-sized, carnivorous dromaeosaurid dinosaur class from the Early Cretaceous Clovery Formation of Montana. Its name, "Terrible claw", refers to the enormous, sickle-shaped talons on the second toe. These claws were almost certainly held retracted while the dinosaur walked on the third and fourth toes. It was usually thought that Deinonychus would kick with the sickle claws to cut at its prey, but recent tests on reconstructions of alike velociraptor talons propose that the claw was used to stab, not slash. Like with all dromaeosaurids the tail was stiffened by a sequence of elongated bones (not tendons).
Based on the group of a number of Deinonychus skeletons in a single quarry — several hundred Deinonychus bones were exposed by paleontologist John Ostrom and Grant E. Meyer in 1964 in southern Montana — it has been speculated that Deinonychus lived in packs. This is quite likely, but it is difficult to prove or disprove this idea. Shed teeth of Deinonychus are often established alongside skeletons of the ornithopod dinosaur Tenontosaurus, representative that it fed on them, and perhaps hunted them.John Ostrom named and described Deinonychus, and the detection of this clearly active, agile predator did much to change the scientific (and popular) beginning of dinosaurs and open the door to conjecture that dinosaurs may have been warm-blooded.
    Several years later, Ostrom noted similarities between the hand of Deinonychus and birds, which led him to revitalize the hypothesis that birds are descended from dinosaurs. Thirty years later, this thought is almost universally accepted. Finds of related dinosaurs from China, such as Sinornithosaurus and Microraptor point to that this dinosaur almost certainly bore feathers. Other relatives include Velociraptor, Utahraptor, and Dromaeosaurus.   
   A skeleton of Deinonychus can be seen on show at the American Museum of Natural History or the Harvard Museum of Comparative Zoology. The American Museum and Harvard specimens are from a dissimilar locality than the Yale specimens which Ostrom described, and the claws are dissimilar shapes (Ostrom 1976). This raises the option that the two are, in fact, different species or even different genera.

Deinonychus Facts:
Name:     Deinonychus
Size:     Skull length: 410 mm (16 in)
Total length: 3 m (10 ft)
Hip height: 1.2 m (4 ft)
Weight: 80 kg (175 lb)
Main Facts:     Renamed as "Terrible claw" .Its tail was stiffened by a sequence of elongated bones (not tendons).

Baryonyx

     Baryonyx ("heavy claw") is a large, carnivorous dinosaur exposed in clay pits just south of Dorking, England. It is known from a single, young specimen, and apparently ate fish because remains of its last meal were discovered fossilized in its ribcage. It has been dated to the Barremian period of Early Cretaceous, approximately 125 million years ago.
    Baryonyx is a very strange tetanuran. The design of its hips and pelvis suggests that it was bipedal for the purposes of on foot from place to place. However, its forelimbs were absurdly large for a theropod, telling that it also spent much of its time on all fours.
    Like the dromaeosaurids, the person had a long curved claw on the thumb of each hand, which deliberates at about 31 cm (12 in). However, instead of having them on the rear foot, it is supposed that Baryonyx had them on the frontage feet.
The skeleton was not accepted exactly as it would have been in life (articulated), so the paleontologists reconstructing it placed them on the front feet because these legs were so powerful. The bone structure suggests a huge bulk of muscle ran down the sides of these front legs, and it therefore seems probable that the claws were placed here.
   The long neck was fairly rigid, and was not S-shaped as in many other theropods. The skull was set at an sharp angle, not the 90° angle common in similar dinosaurs. The long jaw was distinctly crocodilian, and had 96 teeth, twice as many as its relations. Sixty-four of the teeth were located in the lower jaw (mandible), and 32 large ones in the upper (maxilla). The snout almost certainly bore a small crest.
The crocodile-like jaws and huge number of finely serrated teeth suggested to scientists that Baryonyx was a fish-eater. As verification, a number of scales and bones from the fish Lepidotes were also discovered in the body cavity.
   It is speculated that Baryonyx would sit on a riverbank, sleeping on its powerful front legs, and then sweep fish from the river with its powerful striking claw. This is similar to the modern grizzly bear. The long but low posture and angled head support this theory.
Until the discovery of the closely-related Suchomimus, Baryonyx was the only known piscivorous (fish-eating) dinosaur. On the other hand, bones of an Iguanodon were also found in organization with the Baryonyx skeleton. Although not definitive proof, it seems possible that Baryonyx scavenged any extra meat it could find.
   During the early Cretaceous, Wealden Lake covered the bulk of what is now northern Europe. Alluvial plains and deltas stretch from the uplands surrounding the area where London now stands and eventually ran into this great lake.Baryonyx was exposed in these former deltas. In 1983, an amateur fossil hunter named William Walker came across an huge claw sticking out the side of a clay pit in Surrey. He received some help in retrieving the specimen, which was astonishingly intact.The skeleton was agreed by Alan J. Charig and Angela C. Milner, Ph.D.s, of Natural History Museum in London. They available their description of the type species, B. walkeri, in 1986, and named it after Walker.
   About 70 percent of the skeleton was improved, including the skull. Therefore paleontologists can make many useful deductions about Baryonyx from just a particular find.
   It was the first carnivorous dinosaur exposed in England. The skeleton can be seen at the Natural History Museum in London.There is only one specimen of Baryonyx, so there is small debate about classification. There is a resemblance to the tetanuran Becklespinax, but there is no evidence that Baryonyx had similar elongated spines on the back of its neck.
   Another crocodile-like fish-eater, Suchomimus, was described in 1998, and located in the same subfamily (Baryonyichae). It has recently been suggested that (Hutt, 2004) that Suchomimus tenerensis should be redefined as Baryonyx tenerensis due to similarities in their spine.

Baryonyx facts:
Name:     Baryonyx (heavy claw)
Size:     26 to 33 feet long and 16ft tall
Main Facts:     Baryonyx almost certainly weighed 2,000 kg, but psychoanalysis of the bones suggests that only known specimen was not yet fully grown.

Oviraptor

    Oviraptor philoceratops was a little Mongolian theropod dinosaur named by Henry Fairfield Osborn in 1924. Its name is Latin for "egg thief", as it was fossilized on a pile of presumed Protoceratops eggs. However, it is now supposed that the eggs belonged to this genus itself, and that it was actually brooding its eggs, based on discoveries of a related animal called Citipati, named by Clark, Makovicky, and Barsbold in 2000. Oviraptor forms the basis of a collection called Oviraptoridae, named by Barsbold Rinchen in 1976. Barsbold then used the name to coin a group called Oviraptorosauria.
Oviraptor may have eaten eggs; however Barsbold R. in 1977 argued that the strength of its beak indicates that it could break the shells of mollusks such as clams, which are found in the same formation as Oviraptor. The idea of a crushing jaw was first proposed by H. F. Osborn, who noticed both a toothless beak in the original skull and the extension of several bones below the jaw from the palate would have made an "egg-piercing" tool. These bones, ectopterygoids, are not actually part of the egg-piercing structure, and what Osborn found was incorrect.
      In the 1950s and 60s, however, and described in the 70s and 80s, several skulls of oviraptorids have been found which show that they really are egg-piercing bones, as part of the main upper jaw bone or maxilla, which converge in the center to form a pair of prongs. The rest of the bony palate, unlike all other dinosaurs, is extended below the jaw line and would have pressed into the space between the toothless lower jaws. A rhamphotheca, or the keratin forming the beaks of birds, enclosed the edges of upper and lower beaks and probably the palate, as proposed by Barsbold and Osborn.
     James Guerney in his book Dinotopia conceived of an animal based on Oviraptor which, because some felt it was no longer considered a predator of eggs, determined to rename the animal by creating a being he called "Ovinutrix". However, this renaming would be unnecessary, for even if the animal brooded its own eggs, this doesn't mean it didn't eat the eggs of other animals.
    Oviraptor lived in the late Cretaceous time, in a Stage known as the Santonian, and may have lived in the younger Stage called the Companion between 80 to 70 million years ago; it comes almost wholly from the Djadokhta Formation of Mongolia, as well as the northeast region the Neimongol Autonomous Region of China, in a area called Bayan Mandahu. Relatives of Oviraptor comprise Ingenia and Chirostenotes.

Oviraptor facts:
Name:     Oviraptor
Size:     2 m. (6 ft.)
Main Facts:     Renamed as ""Ovinutrix" and it is called as "Egg-thief".

Adasaurus

     Adasaurus Dinosaur (Ada Lizard) was a bird-like carnivorous dinosaur that lived 70 million years ago, throughout the late Cretaceous Period. (The name comes from the name of a mythological evil demon of Mongolia.)
Adasaurus is found in The Field Museum which was named by Rinchen Barsbold in 1983. It has been described as being very alike to Archeopteryx and its discovery added fuel to the present debate concerning dinosaurs and birds. Only unfinished fossils have been found, all in Mongolia, but based mainly in the Gobi desert region.
At six feet (two meters) long and two feet (.7 meters) tall, normally about he size of a large dog, Adasaurus weighed only 33 pounds (15 kilograms) and may have had feathers. Like Velociraptor dinosaurs, it was bipedal with a big, sickle-like claw on each foot.
Aspects of the Adasaurus dinosaurs pelvis, which is very alike to that of ornithischians, lead some scientists to believe that it is actually more closely connected to birds than to dinosaurs.

Name:     Adasaurus Dinosaur (Ada Lizard)
Size:     6 feet long and 2 feet tall.
Main Facts:     Its very likely to that of ornithischians, lead some scientists to believe that it is actually more closely connected to birds than to dinosaurs

Abelisaurus

    Abelisaurus (Abelisaurus comahuensis), meaning "Abel's   lizard", was a type of dinosaur. It was discovered by Othenio Abel, the director of the Argentinian Museum of Natural Science, and named by J.F. Bonaparte and F.E. Novas in 1985.
Abelisaurus Dinosaur has been establish in Rio Negro in Argentina, and is supposed to have lived around 75 to 70 million years ago, during the late Cretaceous period. It is known from a single incomplete, 33-inch (85 cm) long skull. It had strangely heavy teeth, and thus was possibly in part a scavenger.
Abelisaurus Dinosaur was a bipedal carnivore, a primitive theropod dinosaurs, standing roughly 6.6 feet (2 metres) tall at the hips, 21 to 26 feet (almost 8 meters) long and weighing 1.4 tons. Large fenestrations (window-like openings) in the Abelisaurus's skull meant that its skull was lighter than most dinosaurs.
Abelisaurus Dinosaur may have been connected to carnotaurus dinosaurs, which also lived in Argentina over 70 million years ago, and perhaps to indosuchus.

Name:     Abelisaurus "Abel's lizard"
Size:     25 to 30 feet in length
Main Facts:     Standing roughly 6.6 feet (2 metres) tall at the hips and weighing 1.4 tons.

Gasosaurus

       Gasosaurus was a tetanuran dinosaur exposed in Dashanpu,   China. It measured between 3.5 and 4 meters in length and 1.3m in height, with a weight of approximately    150[kg], placing it in the midrange of carnivores by size. However, some estimates put its weight as high as 400kg, as very little is known about this dinosaur.    It lived     throughout Bathonian and Callovian periods (mid-late Jurassic), around 164 million years ago. By analogy with additional tetanurans, it probably hunted in packs.
The first and to date only fossils, albeit postcranial (missing the skull), were healthier in 1985 during the construction of a gas facility. This explains the unusual name, which literally means gas lizard. These fossils were defined as the category species Gasosaurus constructs by the paleontologists Dong Zhiming and Tang Zilu. There have still been very few fossils retrieved, so its precise details are unknown. Specifically, no skull has been established, and some paleobotanists have speculated that Gasosaurus and Kaijiangosaurus may be one and the same species. A relation to Megalosaurus has also been suggested. Gasosaurus skeleton was displayed at the Zigong dinosaur museum. Also, although present consensus is to place Gasosaurus in the group Carnosauria, it may in fact be the most basal Coelurosaurian yet known, or even be a common ancestor of the two groups.
Gasosaurus facts:
Name:     Gasosaurus ( Gas-lizard )
Size:     12 ft long and 5 ft tall
Main Facts:     Gasosaurus had strong legs but short arms like most theropods and it was a carnivore.
 

Buitreraptor

     Buitreraptor gonzalezorum is a newly exposed fossil species, a small rooster-size predatory dinosaur belonging to the dromaeosaurid family. The discover occurred in Argentina in 2005.
Buitreraptor gonzalezorum is the only known species of the genus Buitreraptor. The genus name means "Vulture-raptor", from the Spanish word buitre gist vulture.  
     Buitreraptor lived about 90 million years ago, when South America was a remote continent like Australia today. Buitreraptor has some different physical features than typical northern dromaeosaurs, like Velociraptor .From this scientists end that this dinosaur was not a big-game hunter like most other dromaeosaurs, but a seeker of small animals such as lizards and mammals. Its long bird-like arms confirm such a life of greedy fast-moving small prey. It has long legs and must have been an nimble runner. It most likely had feathers. This dromaeosaur occupied a niche like that of modern secretarybirds or even the dinosaur Troodon from North America.
       Other than Buitreraptor, the only other known dromaeosaurs from the southern continents are Neuquenraptor argentinus from South America (discovered earlier in 2005), Rahonavis (once thought to be a primitive bird) from Madagascar, and nameless dromaeosaur-like teeth from Australia. The bones in both Buitreraptor and Rahonavis show that motorized flight likely evolved separately in two different groups of dinosaurs: birds and southern dromaeosaurs.
     This discovery in the Southern-Hemisphere confirms that dinosaurs were more extensively dispersed around the world than previously thought. Scientists now believe that dromaeosaurs date back to Jurassic times, when all the continents were much closer together. Possibly they originated on the ancient continent Laurasia.
     The fossilized bones were found in 2005 in sandstone in Patagonia, Argentina - by an dig lead by Peter Makovicky, curator of dinosaurs at the Field Museum in Chicago. The field research of Buitreraptor was led by Argentine paleontologist Sebastian Apesteguia. Buitreraptor was discovered in the same fossil site that had earlier yielded Giganotosaurus, the largest carnivorous dinosaur known to science since 1995.
Buitreraptor facts:

Name:     Buitreraptor (Vulture-raptor)
Size:     4ft long and 6ft tall
Main Facts:     Buitreraptor has a slim snout with teeth that lack meat-tearing serrations.

Bruhathkayosaurus

       Bruhathkayosaurus (brew-HATH-kah-yo-SORE-us, meaning "huge bodied lizard") might have been the biggest dinosaur ever lived.
        The accuracy of this claim, however, has been mired in controversy and debate: all the estimates are based on Yadagiri and Ayyasami's 1989 paper, which announced the find. Their technical description is so poor that the authors originally confidential the dinosaur as a theropod, a member a large group of bipedal, carnivorous dinosaurs that includes the Tyrannosaurus; but a review of their data in 1995 exposed that the remains actually belonged to a sauropod (specifically, a titanosaurid), a member of a very dissimilar group of quadrupedal, herbivorous dinosaurs with lengthy necks and tails, like the Brachiosaurus.
Classification
The Bruhathkayosaurus genus has only one known species, the Bruhathkayosaurus matleyi. The species is represented by the holotype specimen GSI PAL/SR/20, which was described by Yadagiri and Ayyasami in 1989 (not 1987, as some sources indicate). Bruhathkayosaurus was displayed in the New Mexico Museum of Natural History.
     It was initially classified as a carnosaur (like the Allosaurus) of an unidentified (incertae sedis) family, which is a collection of theropods. In 1995 Chatterjee reclassified it as a titanosaur. The reclassification was based on the enormous size of the limbs, and the structure of the pelvis.

The original magazine described little in the way of diagnostic characteristics, and was only supported by a few line drawings. This has led to conjecture that the bones might actually be petrified wood, akin to the way the unique discoverers of the Sauroposeidon initially supposed their find to be fossilized tree trunks.
      The name chose, Bruhathkayosaurus, is derived from the Hindi bruhath (huge or heavy) and kaya (body); and the Greek sauros (lizard).

   Discovery

     The Bruhathkayosaurus was establishing near the southern tip of India, specifically in the Tiruchirapalli district of Tamil Nadu, to the northeast of Kallamedu village. It was improved from the rocks of the Kallemedu Formation, which are dated to the Maastrichtian faunal stage of the late Cretaceous period. It lived in the direction of the end of Mesozoic era, about 70 million years ago.
Bruhathkayosaurus facts:

Name:     Bruhathkayosaurus (huge bodied lizard)
Size:     145ft long and 8.8ft tall
Main Facts:     The fossilized remains include hip bones (the ilium and ischium), part of a leg bone (femur), a shin bone (tibia), a forearm (radius), and a tail bone (a vertebrae, specifically a platycoelous caudal centrum).

Carcharodontosaurus

     Carcharodontosaurus ("shark-toothed reptile") was a gigantic carnivorous allosaurid dinosaur that lived approximately 98 to 93 million years ago, during the Cretaceous period. It rival Tyrannosaurus rex in size, growing to a predictable length of 45 feet (13.5 meters) and weighing up to eight tons.
Paleontologists once thought that Carcharodontosaurus had the longest skull of any of the theropod dinosaurs. However, the premaxilla and quadrate bones were missing from the original African skull, which led to misinterpretation of its actual size by researchers. A more self-effacing length of five feet, four inches (1.6 meters) has now been proposed. Thus, the honor of the largest theropod skull now belongs to another huge allosaurid dinosaur, Carcharodontosaurus's close relative Giganotosaurus.
      Carcharodontosaurus fossils were first established by Charles Deperet and J.Savornin in North Africa in 1927.
Originally called Megalosaurus saharicus, its name was changed in 1931 by Ernst Stromer von Reichenbach to that used today.These first fossils of Carcharodontosaurus were shattered during World War II. However, cranial material from a Carcharodontosaurus was once more discovered in North Africa in 1996 by paleontologist Paul Sereno.
     Carcharodontosaurus displayed in the natural history museum, London and it may have scavenger as well as an active predator.
      Carcharodontosaurus had long, muscular legs and fossilized track ways indicate that it could run about 20 miles per hour, although there is some controversy as to whether it actually did. At eight tons, a forward fall would have been poisonous to Carcharodontosaurus, due to the inability of its small arms to brace the animal when it landed.
      According to its Encephalization Quotient (brain to body weight ratio), Carcharodontosaurus may have been comparatively intelligent. Ongoing discoveries and investigations by scientists will certainly shed further light on the physiology, behavior, and ecological circumstances and interactions of Carcharodontosaurus.

Carcharodontosaurus facts:

Name:     Carcharodontosaurus (shark-toothed reptile)
Size:     45ft long and 12ft tall
Main Facts:     Carcharodontosaurus was a carnivore, with huge jaws and long, serrated teeth up to eight inches long.

Aublysodon

       The Aublysodon is a carnivorous dinosaur. Even before the badlands of North America started enlightening the bones of Tyrannosaurus rex, many paleontologists from the late nineteenth century decided that long, pointed teeth turning up in many localities in the Western United States belonged to the deadliest, most ferocious dinosaurs that ever lived. Problematically, at this time, many dinosaur taxons were named for isolated teeth; such genera include Trachodon, Paleoscincus, and Troodon. Scientists named are particular taxon Aublysodon. Since then, over a dozen type of this supposedly fearsome theropod have been described.
The first post-dentary remains of Aublysodon were a partial skull unearthed in Montana in the 1980s. The skull bore the same pointed teeth attached to a long tapered skull the length of an average human arm. This adaption resembles that of theropods designed for eating fish. Famous dinosaurologist and paleoartist Gregory S. Paul decided the skull should belong to a new class, Aublysodon molnari. Unfortunately, with only this partial skull and isolated teeth, very few other details can be given about this elusive animal. We do know that Aublysodon Dinosaurs was extensive; its remains have been found in many locations.
    As with some other theropods, many paleontologists no longer use Aublysodo as a valid genus. It is now extensively considered to be just a juvenile Tyrannosaurus rex, due to longer teeth and larger eyes characteristic of younger specimens of that species.

Aublysodon facts:
Name:     Blunt tooth
Size:     1, 5 m. (4.5 ft.)
Main Facts:     It is now extensively considered to be just a juvenile Tyrannosaurus rex, due to longer teeth and larger eyes characteristic of younger specimens of that species.

T-rex

     Best known of the dinosaurs, Tyrannosaurus rex was one of the most awesome creatures that have walked on the earth. T-rex was one of the largest meat - eating dinosaurs, having a skull up to 5ft long and many sharp teeth reaching lengths of 6in (15cm). The first complete Tyrannosaurus rex T-rex skeleton was discovered in 1902, and many great examples have been unearthed over the last fifteen years.

TIME - 65 - 68MYA, Late Cretaceous period.
RANGE - USA Colorado, Montana, N. Dakota
New Mexico, Wyoming.
Canada Alberta, Saskatchewan.
DIET - The T-rex was a carnivore.
SIZE - Height up to 20ft (6m) and lengths up to 49ft(15m)..
WEIGHT - 6.5 US tons.

Tyrannosaurus rex ("tyrant lizard king"), also recognized colloquially as The King of the Dinosaurs, was a huge carnivorous theropod dinosaur from the Upper Maastrichtian, the last stage of the Cretaceous time, 65–66 million years ago. Its fossil leftovers are rare — as of 2005 only 30 specimens had been found1, including three total skulls. The first specimens found played a significant role in the Bone Wars. T. rex is the best known carnivorous dinosaur, chiefly because it was consideration to be the largest to have ever existed for a long time. While there have been sensationalistic claims of new, larger theropods "dethroning" T. rex as the King of the Dinosaurs, proof remains scant and open to debate. T. rex will very likely remain a subject of ongoing scientific investigate and popular culture.

Discoveries

     The first specimen (a partial vertebra) was establish by Edward Cope in 1892 and was described as Manospondylus gigas. It was assigned to Tyrannosaurus rex in 1912 by Henry Osborn. Barnum Brown, helper curator of the American Museum of Natural History, establishes the second T. Rex Skeleton in Wyoming in 1900. This specimen was at first named Dynamosaurus imperiosus in the same paper in which Tyrannosaurus rex was described. Were it not for page order, Dynamosaurus would have turn out to be the official name. The original "Dynamosaurus" material resides in the collections of the Natural History Museum, London.

Characteristics

Up to 13 meters (43 feet) in length and 4–7 tons in weight, T. rex was one of the main carnivorous dinosaurs of all time. Compared to additional carnivorous dinosaurs, the skull of Tyrannosaurus is a lot modified. Many of the bones are compound together, preventing group between them. The bones themselves are much more massive than is typical of a theropod, and the jagged teeth, far from being bladelike, are massive and oval in cross-section. Heavy wear and the bite script found on bones of other dinosaurs indicate that these teeth could bite into solid bone. The teeth are often damaged or broken at the tips from heavy use but, unlike mammals, were continually full-grown and shed all through the life of the animal. Compared to other giant carnivorous dinosaurs such as Allosaurus, Tyrannosaurus appears to have had a sizeable brain, but it was almost certainly not chiefly intelligent by mammalian standards.

The neck was short and very a lot muscled. The arms of T. rex were small, maybe to make up for the weight of its huge head, but were very sturdy. Paleontologists continue to argue about what reason, if any, they served. They may have served to grab the female during sex, and surely helped the animal to get up, temporarily behind the front body like the struts of a detached truck trailer. The legs were comparatively long and slender for an animal of this size. Recent investigate suggests that an adult Tyrannosaurus could not run much, but juveniles might have been with no trouble as fast as a modern lion. Most scientists and paleontologists adults were not fast runners. The configuration of its hip bone relative to the legs and spine propose a muscle tissue expansion and posture that would have enabled the animal to run close to 30 mph (50 km/h) in adulthood. Evidence of its prey in fossils and migrating patterns propose this animal probably had to have been able to sustain a speed strong enough to hunt its prey. To recompense for its immense bulk, the center of many bones were hollowed out. This significantly reduced the weight of the skeleton while maintaining much of the power of the bones.