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Plant-eating　dinosaurs

Ornithischia－Ornithopoda　Ⅱ

（Iganodontia）

"high ridge"
Hypsilophodon foxii
Naming peron...Huxley/1869

Hypsilophodontidae

2.3 m long／Early Cretaceous ／England・USA・Spain

3 nearly complete skeletons, approximately 10 partial skeletons, cranial and postcranial elements.

It had beak of the keratin which has a tooth and a cheek tooth was kept in the sharp condition.

There was a cheek bag, too.

It thinks that the movement was quick．

"differently toothed lizard"

Heterodontosaurus tucki
Naming persons Crompton & Charig/1962

Heterodontosaurinae

90 cm to 1.2 m long / 10 kg / Early Jurassic / S. Africa

As for this dinosaur, complete skeleton, skull, fragmentary jaw are left.

This dinosaur has the one which has a cuspid and the one which doesn't have it.

Probably, it thinks whether they are not a male and a female.

New

"Oak tree lizard"
Dryosaurus　 altus
Naming persons　 Othniel C. Marsh/ 1894

　Dryosauridae

　3 m　long/77-90kg　/　Late　Jurassic /North America ,Africa.

　Dryosaurus was a fast, agile, two-legged runner; its back legs were long, strong, and thin. It had a stiffened tail that helped it balance when running. Running must have been its main defense against predators like Allosaurus and other predators.

　

"Iguana tooth"
Iguanodon anglicus
Naming peron...Holl / 1829

Iganodontoidea

9-10m long / 4.5-5.5t／Ealry Cretaceous／England

"brave lizard"
Ouranosaurus nigeriensis
Naming person...P.Taquet / 1976

Iganodontoidea

7m long／Ealry Cretaceous／Niger

"flexible lizard"
Camptosaurus dispar
Naming person...Marsh / 1885

Camptosauridae

3.5-7m long/400-700kg／.Late Jurassic to Early Cretaceous ／Colorado,Oklahoma,Utah,Wyoming

"Sinew Lizard"
Tenontosaurus tillettorum
Naming personn Ostrom / 1970

Iguanodontia

Diet herbivorous/ 7.5 m long/Early Cretaceous / Canada, USA

　

Tenontosaurus was an early member of the plant-eating family of dinosaurs that includes Iguanodon.

It had a very long& wide width tail compared to other members of its family. Instead of front teeth, it had a beak, and it walked on all four feet most of the time.

(C) 1997-2002 M.Shiraishi....All Rights Reserved　

mailto:mshira@js2.so-net.ne.jp

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"high ridge"	Hypsilophodon foxii Naming peron...Huxley/1869 Hypsilophodontidae 2.3 m long／Early Cretaceous ／England・USA・Spain 3 nearly complete skeletons, approximately 10 partial skeletons, cranial and postcranial elements. It had beak of the keratin which has a tooth and a cheek tooth was kept in the sharp condition. There was a cheek bag, too. It thinks that the movement was quick．
"differently toothed lizard"	Heterodontosaurus tucki Naming persons Crompton & Charig/1962 Heterodontosaurinae 90 cm to 1.2 m long / 10 kg / Early Jurassic / S. Africa As for this dinosaur, complete skeleton, skull, fragmentary jaw are left. This dinosaur has the one which has a cuspid and the one which doesn't have it. Probably, it thinks whether they are not a male and a female.
New "Oak tree lizard"	Dryosaurus　 altus Naming persons　 Othniel C. Marsh/ 1894 　Dryosauridae 　3 m　long/77-90kg　/　Late　Jurassic /North America ,Africa. 　Dryosaurus was a fast, agile, two-legged runner; its back legs were long, strong, and thin. It had a stiffened tail that helped it balance when running. Running must have been its main defense against predators like Allosaurus and other predators.

"Iguana tooth"	Iguanodon anglicus Naming peron...Holl / 1829 Iganodontoidea 9-10m long / 4.5-5.5t／Ealry Cretaceous／England
"brave lizard"	Ouranosaurus nigeriensis Naming person...P.Taquet / 1976 Iganodontoidea 7m long／Ealry Cretaceous／Niger
"flexible lizard"	Camptosaurus dispar Naming person...Marsh / 1885 Camptosauridae 3.5-7m long/400-700kg／.Late Jurassic to Early Cretaceous ／Colorado,Oklahoma,Utah,Wyoming
"Sinew Lizard"	Tenontosaurus tillettorum Naming personn Ostrom / 1970 Iguanodontia Diet herbivorous/ 7.5 m long/Early Cretaceous / Canada, USA 　 Tenontosaurus was an early member of the plant-eating family of dinosaurs that includes Iguanodon. It had a very long& wide width tail compared to other members of its family. Instead of front teeth, it had a beak, and it walked on all four feet most of the time.