Definitions

1. Archosaurs are a group of diapsid amniotes whose living representatives consist of modern birds and crocodilians. (Web site)
2. The archosaurs were characterized by elongated hind legs and an erect pose, the early forms looking somewhat like long-legged crocodiles. (Web site)

Diapsid Archosaurs

1. Their places were taken by the diapsid archosaurs known as dinosaurs, which dominated the terrestrial ecosystem for the rest of the Mesozoic Era. (Web site)

Paleontologists

1. This feature is responsible for the name " thecodonts " ("socket teeth"), which paleontologists used to apply to all or most archosaurs.

Late Triassic

1. By the late Triassic, however, the forebrain of archosaurs like Desmatosuchus had grown to similar proportions of that seen in the Crocodilia (Hopson, 1979).

Triassic

1. But archosaurs quickly became the dominant land vertebrates in the early Triassic. (Web site)

Group

1. Lepidosauromorpha is a group of reptile s comprising all diapsid s closer to lizard s than to archosaurs (including crocodile s and bird s). (Web site)
2. The Crurotarsi ("cross-ankles") are a group of archosaurs created as a node-based clade by Paul Sereno in 1991 to supplant the old term Pseudosuchia.

Mammal-Like Reptiles

1. Archosaurs made quicker progress than mammal-like reptiles towards erect limbs, and this gave them greater stamina by avoiding Carrier's constraint.

Synapsids

1. Archosauromorph reptiles - especially archosaurs - progressively replaced the synapsids that had dominated the Permian. (Web site)
2. Archosauromorph reptiles — especially archosaurs — progressively replaced the synapsids that had dominated the Permian. (Web site)

Dinosaurs

1. By the end of the Triassic Period, dinosaurs were becoming the dominant large land animals, and the other archosaurs and synapsids lost diversity.
2. Early disagreements included whether birds evolved from dinosaurs or more primitive archosaurs. (Web site)
3. Towards the very end of the Permian the first archosaurs appeared, a group that would give rise to the dinosaurs in the following period. (Web site)

Crocodiles

1. Together, crocodiles, dinosaurs, birds, and thecodonts are called archosaurs. (Web site)
2. Crocodilians are the order of archosaurs that includes alligators, crocodiles, gavials, etc. (Web site)

Pterosaurs

1. Crocodilians, pterosaurs and dinosaurs survived the Triassic-Jurassic extinction event about 195 million years ago, but other archosaurs became extinct. (Web site)

Archosaurs

1. Dinosaurs are a specific subgroup of the archosaurs, a group that also includes crocodiles, pterosaurs, and birds. (Web site)
2. Lepidosauromorpha is a group of reptiles comprising all diapsids closer to lizards than to archosaurs (including crocodiles and birds). (Web site)
3. But the cynodonts lost out to a previously obscure group of sauropsids, the archosaurs (which include the ancestors of crocodilians, dinosaurs and birds).

Categories

1. Animals > Vertebrates > Reptiles > Pterosaurs
2. Animals > Vertebrates > Reptiles > Crocodiles
3. Places > Earth > Geology > Dinosaurs
4. Life > Animals > Tetrapods > Synapsids
5. Triassic Period
6. Books about "Archosaurs" in Amazon.com
   

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