ornithosuchian
reptile
Also known as: Avemetatarsalia, Ornithosuchia, ornithosuchid
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archosaurs
- In archosaur
The second archosaurian branch, the Ornithosuchia, includes birds and all archosaurs more closely related to birds than to crocodiles. In addition to the dinosaurs (the group from which birds evolved and to which they formally belong), ornithosuchians include pterosaurs and some extinct Triassic forms such as lagosuchids and lagerpetontids.
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crurotarsans
- In crurotarsan
…200 million years ago), the ornithosuchians (“bird crocodiles”), the rauisuchids (“Rau’s crocodiles”), and several single, ungrouped taxa. There is much disagreement concerning the evolutionary position of the ornithosuchids within the Crurotarsi, because they appear to possess both crocodilian and dinosaur-like features that paleontologists have not fully sorted out. In addition,…
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