Hanging around

Of course, much of a palaeontologist's work is open to debate and contradiction. Many scientists are not convinced that Abelisaurus is a separate sort of dinosaur at all, but suspect it is actually Carcharodontosaurus (car-CHA-row-DON-toe-SORE-us), the big Moroccan predator. If so, it would mean Carcharodontosaurus was in existence not only later, but also in a different area. This Cretaceous dinosaur is a classic predator it has a big head filled with sharp teeth, powerful legs and a big,...

Discovery

Dinosaurs have been discovered on every continent on earth, although some areas have a larger concentration of finds than others. This may indicate either the amount of time spent excavating the fossil beds (areas with a high concentration of fossils) or the number of dinosaurs that lived in a particular area.

Massive muncher

Quaesitosaurus, like all the large sauropods, has to consume a huge amount of food every day just to keep going. For a big dinosaur, it has only got a little mouth, so those jaws work hard every day, especially seeing as leaves are not always the most nutritious of foods. These dinosaurs spend most of their time eating. Many plant-eating dinosaurs - Quaesitosaurus included - carry gastroliths in their stomachs. These are stones that the dinosaur swallows to help grind up the food inside its...

Thagomizer

Like its more famous cousin, Stegosaurus, Wuerhosaurus has a fearsome weapon at the end of its tail. These four sharp spikes are quite effective at warding off all but the biggest or most persistent of predators. The name palaeontologists use for the stegosaurid club is 'thagomizer', which comes from a Gary Larson cartoon showing a caveman telling others that the pointy end of a Stegosaurus was named after the late Thag Simmons, who was apparently killed by a thagomizer.

Abelisaurus

Named after Roberto Abel of the Argentinian Museum of Natural Sciences, this late Cretaceous dinosaur is something of a mystery but we do know it's a pretty fearsome predator. -to RFEL-ee-SORE-us H0W10 l ame Abel's lizard Period Late Cretaceous Where found Argentina -to RFEL-ee-SORE-us H0W10 l ame Abel's lizard Period Late Cretaceous Where found Argentina Length 9 metres (29.7 ft*U Weight 1,300 kilograms 0-4

Whats in a name

Ornitholestes means 'bird eater', and it was given this name because palaeontologists believed it could eat early birdlike dinosaurs like Archaeopteryx. There is one problem with this theory, however - no one has spotted any of these birdlike dinosaurs in the territory of Ornitholestes. Either it has eaten them all already - which is unlikely - or they just can't be found here, so the name is misleading.

Zephyrosaurus

Not many dinosaurs begin with the letter Z, so Zephyrosaurus is something of a collector's item. Keep your eyes peeled for this one if you're spotting in the United States. Early Cretaceous Where found USA Height 1 metre (3 feet) Length 2 metres (6 fee ) We ght Not known F od Plants Special features Agile r in. m sn k Jin iinr ii ji r in. m sn k Jin iinr ii ji Since Zephyrosaurus is a small and agile dinosaur it is really skilled at zipping around. When you have no armour plating or defensive...

Ankylosaurus

Ankylosaurus Defence Pictures

This is the last and possibly the most famous of the ankylosaurids. Ankylosaurus is big, wide, heavy and covered in bony plates. This is one well protected dinosaur, and most predators have to think twice before trying to tackle it. The body of Ankylosaurus is all about defence, being covered in thick plates of bone fused into the dinosaur's skin. This forms a hard, shell-like structure over the creature it even has bony plates over its eyes. Not only that, but its body is covered in rows of...

Dinosaur

Examples Triassic Dinosaurs

Dinosaurs are a large yet very specific group of creatures. To qualify, an animal has to satisfy a number of criteria 0 It must have lived during the Mesozoic era see page 10 . 0 It must be a reptile, although not all reptiles are dinosaurs. For example, lizards are reptiles, but they are not dinosaurs. 0 Its legs must be located below its body, giving it an erect stance, as opposed to sticking out from the sides, like those of a crocodile. 0 It must have lived on land, not in the air like...

Much like Diplodocus

Diplodocus Apollo

Mamenchisaurus looks a lot like Diplodocus, especially with its long, downward-pointing neck and whippy tail. It is only when you get really close that the differences become apparent, namely the head and teeth. However, we would recommend that you take our word for it and don't venture too H0Wt S LmeMamenchiliZard Meaning of name iv Family Euhelopodidae Period Late Cretaceous

Giganotosaurus

Dinosaurs Carnivores

When Giganotosaurus was first spotted in Argentina, it started a big debate - is this dinosaur the biggest meat-eater ever Many palaeontologists believe that Giganotosaurus is the largest of all the dinosaur carnivores - even larger than Tyrannosaurus rex. From sightings made so far, it certainly seems to be longer and taller than its more famous rival. However, like Carcharodontosaurus, it also seems to be more lightly built than Tyrannosaurus rex, so the argument continues about who is the...

Saurolophus

Duck-billed dinosaurs such as Saurolophus are very common, but if you want to see how dinosaurs operate as a herd, then watching the various members of the hadrosaur family is a rewarding experience. As with other hadrosaurs, the crest of Saurolophus is used as a communication device. In this instance, tubes from within the crest link up to a balloon-like pouch on the creature's snout. Because Saurolophus travel in herds, they can be noisy company to keep. How to say t SORE-OL-o-fus Meaning of...