Similar words: dinosaur, allosaurus, pterosaur, plesiosaur, ichthyosaur, stegosaurus, tyrannosaur, apatosaurus. Meaning: n. extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts.
1 Belief in increasing archosaur homeothermy stems from the earlier discussion of the apparent change in posture.
2 There were three distinctive characteristics about the archosaurs that paleontologists discovered marked them off from their antecedents.
3 The find moves several species thought to belong to crocodile family fossils to the archosaur side of species lines, and indicates the dinosaur family had deeper roots than previously suspected.
4 Everest, Farmer said. A similar ability to squeeze out ample oxygen from thin air probably gave bird's' archosaur ancestors an edge over the synapsids.
5 Among the remnants are rare fragments of land life that survived the same period, including part of a conifer plant and the tooth of an archosaur reptile.
6 Archaelogists also discovered a number of larger land-based animals and plant fossils including the sharp tooth of an archosaur and the remains of some ancient conifer-like plants.
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