Early Animal Encyclopedias: Dinosaurs

Early Animal Encyclopedias: Dinosaurs — page 7 — ANCHIORNIS ANCHIORNIS Tiny Dino Anchiornis was first discovered in China in 2009. This dinosaur lived during the Late Jurassic Period It is one of the smallest lightest dinosaurs ever found 10 Length 1.3 feet 0.4 m Appearance Anchiornis was the same size as a chicken and had feathers But unlike a chicken Anchiornis had four wings Feathers sprouted from both its arms and legs In Anchiornis fossils these feathers have lost their original colors But scientists studied them carefully They took samples from a fossil They compared the samples to modern birds The scientists were Weight 8.8 ounces 250 g

Early Animal Encyclopedias: Dinosaurs — page 8 — able to figure out the color of the dinosaur Anchiornis was black and white with a red crest Climbing and Gliding Most likely Anchiornis could not fly It probably climbed trees with its claws and glided around It hunted lizards fish and other small animals When Did This Dinosaur Live Triassic Period 252 million years ago Anchiornis fossil Jurassic Period Cretaceous Period 66 million years ago 201 million years ago 145 million years ago 11

Early Animal Encyclopedias: Dinosaurs — page 9 — 12 ANKYLOSAURUS ANKYLOSAURUS Range Ankylosaurus lived in what is now the United States This plant-eater lived in the Late Cretaceous Period It went extinct after an asteroid struck Earth All the large dinosaurs living at this time also died out Appearance Spikes and hard plates protected Ankylosaurus Its tail ended in a huge bony club It had short legs and a short neck Ankylosaurus grew up Triassic Period Jurassic Period 252 million years ago Length 33 feet 10 m When Did This Dinosaur Live 201 million years ago Weight 4.4 tons 4 metric tons 145 million years ago Cretaceous Period 66 million years ago

Early Animal Encyclopedias: Dinosaurs — page 10 — Ankylosaurus fossil to 33 feet 10 m long It weighed as much as 4.4 tons 4 metric tons It was the largest of a family of armored dinosaurs called ankylosaurs Ready for Battle Ankylosaurus was too slow and heavy to run from a fight It used its powerful armor for protection Its enemies included Tyrannosaurus It likely swung its tail to defend itself 13

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