Canadian relative of T.rex

Gorgosaurus, means "Fierce lizard'' is the relative of T.rex that lived in Montana,Alberta during Late cretaceous period.Like most known tyrannosaurids, Gorgosaurus was a bipedal predator weighing more than two metric tons as an adult; dozens of large, sharp teeth lined its jaws, while its two-fingered forelimbs were comparatively small.It  lived in a lush floodplain environment along the edge of an inland sea which would later rise up to form North America. It was an apex predator, preying upon abundant ceratopsids and hadrosaurs.

Longest sauropod

Mamenchisaurus, means "Mamenchi lizard" is the longest sauropod that lived in China during jurassic period.It has a really long neck. In fact, it had the longest neck of any creature that ever lived. Stretching 18 metres (60 feet), the neck on Mamenchisaurus was longer than a school bus. The rest of it was just like other members of its family; a long tail, with stout legs.

Compy,the smallest dinosaur

Compsognathus, means "Elegant jaw" is the smallest dinosaur that lived in Germany during Jurassic period.This little pack hunter probably ate bugs and small lizards. In fact, the first fossil skeleton of this dinosaur had the remains of its last meal, a lizard, still in its stomach.

First known nodosaur

Nodosaurus, means "Knobbed lizard" is a genus of ankylosaur that lived in North America during Late cretaceous.The first fossil is discovered in Wyoming at 1889. It eat plants and unlike ankylosaurus,it does not have club on it's powerful tail.To defend itself from predator, it used it tail that full of spikes.

First Named dinosaur

Megalosaurus means "Great lizard" is the first dinosaur named that lived in England during jurassic period.The right one is the first design of megalosaurus,which walk on four legs while the left one is the modernized design of megalosaurus, which like all theropod.The fossil of this dinosaur is not complete so this theropod left many mystery.

First known herbivorous dinosaur

Iguanodon, means "Iguana tooth" is the first dinosaur fossil discovered that lived in England during early cretaceous period.It could stand on its hind limbs, and yet normally walk on all fours. If attacked, it could dissuade a predator with its powerful thumb spike.Iguanodon has become quite famous as a result of it's starring role in the Disney animated film Dinosaur, but before that it helped people understand what dinosaurs really looked like. It was one of the first complete skeletons ever found. This allowed scientists who had never seen a complete dinosaur, to figure out what it would have looked like in life. In fact, the first time this common dinosaur was found as just a partial skeleton, scientists put its thumb spike on its nose!

Carnivores of India

Rajasaurus, means "King of lizard" is an abelisaurid that lived in India during cretaceous period.Paleontologists Paul Sereno of the University of Chicago, Jeff Wilson of the University of Michigan, and Srivastava worked together as an Indo–American group to study the Narmada River fossils. The fossils represented the partial skeleton of the new species Rajasaurus narmadensis, which means "princely lizard from the Narmada Valley." The fossilized bones of Rajasaurus have also been found in the upriver region of the Narmada, at Jabalpur, in the state of Madhya Pradesh. Its fossilized bones were discovered by Suresh Srivastava of the Geological Survey of India (GSI). Excavated from the Narmada River valley in Rahioli in the Kheda district of Gujarat, India, the find was announced as a new genus of dinosaur by American and Indian scientists on August 13, 2003.

Largest Pterosaur

Quetzalcoaltus, means "Feathered serpent" is the largest pterosaur that lived in North America during Late cretaceous period.When first discovered it was thought to have had a fifteen meter wingspan but further studies have reduced this estimate to eleven meters,‭ ‬although that‭’‬s still huge for a pterosaur.‭ ‬Another revision was the beak in that it has been learned that it terminated in a sharp point as opposed to the original blunt edge.  A more likely scenario accepted now is that Quetzalcoatlus had a lifestyle similar to that of a stork,‭ ‬perhaps stalking small prey items like lizards and mammals in vegetative growth on the ground,‭ ‬or sitting at the edges of streams and rivers snatching fish and amphibians as they swam by.‭ ‬Such feeding strategies would require very little energy expenditure,‭ ‬making it easier for Quetzalcoatlus to maintain the calorie intake to fuel its body.

Australian pliosaur

Kronosaurus, means "Cronus lizard" is a pliosaur that lived in Australia seas during Early cretaceous period. Kronosaurus is one of the more famous fossil discoveries to come from Australia,‭ ‬and as a huge short-necked pliosaur,‭ ‬Kronosaurus would have been an apex predator of the waters it swam in.‭ ‬The teeth of Kronosaurus are conical and up to thirty centimetres long,‭ ‬although most of that was root with up to twelve centimetres making up the exposed crown.‭ ‬Interestingly the teeth of Kronosaurus are quite different to other pliosaurs in that they are not serrated and do not have three facets.‭ ‬The teeth may suggest that despite its large size Kronosaurus may have seized smaller to medium sized prey which could then be manipulated to be swallowed.

Largest raptor

Utahraptor,means "Utah thief'' is the largest raptor that lived in Utah,North America during early cretaceous period.One of the most unique aspects that Utahraptor shares with its more famous cousin Velociraptor is that both had a lethal killing claw on each foot. Each inside toe had a large (about 10 inches) hooked claw that was controlled by a strong tendon. This claw was held upward when the animal was walking or running.It preyed on Iguanodon and Fight an ankylosaur called Gastonia

Biggest herbivorous dinosaur that lived on earth

Argentinosaurus,means "Argetin lizard" is the biggest sauropod that lived in South America during Late Cretaceous period.Argentinosaurus was discovered by a retired oil worker and was formally described in 1993. The few bones include hipbones, backbones, and a tibia (lower leg bone). One vertebra was over four feet (1.3 m) tall and the tibia was 58 inches (155 cm) long. A number of prominent scientists have stated that this member of the South American titanosaur family was the largest dinosaur that ever lived.

Cannibalism dinosaur

Majungasaurus, means "Majunga dome" is a genus of abelisaurid that related to Carnotaurus that lived in Madagascar during Late Cretaceous.It lived alongside the sauropod Rapetosaurus, which was its main prey, as well as smaller carnivores such Rahonavis and Masiakasaurus.There is also evidence for cannibalism in Majungasaurus, with bones showing bite marks that could only be made by other Majungasaurus.

Spiky face dinosaur

Styracosaurus, means "Spiked lizard'' is a genus of ceratopsians that lived in North America during late cretaceous.Styracosaurus is one of the most well known of all ceratopsians, second only to its more famous relative, the Triceratops. Styracosaurus is part of the centrosaurine branch of ceratopsids, which are categorised by their nose-horn being larger than their brow horns. Styracosaurus also had common features found in all ceratopsians; a beaked mouth with powerful molars for grinding down plant matter and cheek pouches to store food for chewing. The most notable aspect of Styracosaurus is its impressive array of spikes across its frill.

The most terrifying shark ever lived on earth

Megalodon, means "Big tooth" is the largest prehistoric shark that roamed the prehistoric seas.Megalodon teeth is 18 centimeters in height and this mega predator eat fish and marine mammals.One of the most common myths most often told about C. megalodon is that it is only known from teeth.‭ ‬In reality the teeth are by far the most common fossils of C. megalodon,‭ ‬but a small and growing number of vertebras have also been recovered.‭ ‬In shark biology in general,‭ ‬the skeleton is always made up of‭ '‬soft‭' ‬cartilage,‭ ‬but the vertebrate are made up of harder calcified cartilage.‭ ‬This means that while the vertebra can and often do decompose,‭ ‬they can survive for longer increasing the chance of them getting fossilised.