Dinosauriformes: Difference between revisions
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'''Dinosauriformes''' is a [[clade]] of [[archosauria]]n [[reptile]]s that include the [[dinosaur]]s and their most immediate relatives. All dinosauriformes are distinguished by several features, such as shortened forelimbs, and an at least partially perforated [[acetabulum]], the hole in the hip socket traditionally used to define dinosaurs. |
'''Dinosauriformes''' is a [[clade]] of [[archosauria]]n [[reptile]]s that include the [[dinosaur]]s and their most immediate relatives. All dinosauriformes are distinguished by several features, such as shortened forelimbs, and an at least partially perforated [[acetabulum]], the hole in the hip socket traditionally used to define dinosaurs. |
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The clade Dinosauriformes was created in 1992 by F.E. Novas, who used it to include the [[herrerasaur]]s, which he did ot consider |
The clade Dinosauriformes was created in 1992 by F.E. Novas, who used it to include the [[herrerasaur]]s, which he did ot consider members of Dinosauria proper. Contrary to Novas, most paleontologists since 1992 have considered herrasaurs to be true dinosaurs, though many other primitive, dinosaur-like reptiles fall within his definition of Dinosauriformes. Dinosauriformes fall within the clade [[Dinosauromorpha]]. |
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==Phylogeny== |
==Phylogeny== |
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Revision as of 20:55, 2 January 2008
| Dinosauriformes Temporal range: Middle Triassic - Recent
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| (unranked): | Dinosauriformes Novas, 1992
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| Clades | |
Dinosauriformes is a clade of archosaurian reptiles that include the dinosaurs and their most immediate relatives. All dinosauriformes are distinguished by several features, such as shortened forelimbs, and an at least partially perforated acetabulum, the hole in the hip socket traditionally used to define dinosaurs.
The clade Dinosauriformes was created in 1992 by F.E. Novas, who used it to include the herrerasaurs, which he did ot consider members of Dinosauria proper. Contrary to Novas, most paleontologists since 1992 have considered herrasaurs to be true dinosaurs, though many other primitive, dinosaur-like reptiles fall within his definition of Dinosauriformes. Dinosauriformes fall within the clade Dinosauromorpha.
Phylogeny
Cladogram simplified after Ezcurra (2006):
| Dinosauriformes |
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References
- Hutchinson & Gatesy (2000); Novas (1996); Sereno & Arcucci (1994).