Aetosaurinae: Difference between revisions
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Revision as of 00:30, 14 October 2021
| Aetosaurinae Temporal range: Late Triassic
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| Paratypothorax, a typohoracicine | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauria |
| Clade: | Pseudosuchia |
| Order: | †Aetosauria |
| Family: | †Stagonolepididae |
| Subfamily: | †Aetosaurinae Heckert and Lucas, 2000 |
| Clades | |
Aetosaurinae is one of the two main clades of aetosaurs, the other being Desmatosuchia. It is a stem-based taxon defined as all aetosaurs more closely related to Aetosaurus than to the last common ancestor of Desmatosuchus.[1] The only synapomorphy that diagnoses the clade Aetosaurinae is the medial offset of the dorsal eminences of the paramedian osteoderms.[2] A phylogenetic study in 2012 found Aetosaurinae to be paraphyletic, with Aetosaurus being the basal-most stagonolepidid and aetosaurines like Calyptosuchus, Neoaetosauroides, and the newly described Aetobarbakinoides being successively more derived taxa leading up to a clade containing Desmatosuchinae and Typothoracisinae. Under this phylogeny, most traditional aetosaurines are more closely related to Desmatosuchus than they are to Aetosaurus, and the clade Aetosaurinae can only include Aetosaurus.[3] However, new phylogenies have recovered Typothoracisinae within Aetosaurinae, making Aetosaurinae a valid clade once more.[4][5]
References
- ^ Heckert, A. B.; and Lucas; S. G. (2000). "Taxonomy, phylogeny, biostratigraphy, biochronology, paleobiogeography, and evolution of the Late Triassic Aetosauria (Archosauria: Crurotarsi)". Zentralblatt für Geologie und Paläontologie, Teil I. 11–12: 1539–1587.
- '^ Parker, W. G. (2007). "Reassessment of the aetosaur Desmatosuchus' chamaensis with a reanalysis of the phylogeny of the Aetosauria (Archosauria:Pseudosuchia)". Journal of Systematic Palaeontology. 5: 41–68. doi:10.1017/S1477201906001994.
- ^ Desojo, J.B.; Ezcurra, M.D.; Kischlat, E.E. (2012). "A new aetosaur genus (Archosauria: Pseudosuchia) from the early Late Triassic of southern Brazil" (PDF). Zootaxa. 3166: 1–33. ISSN 1175-5326.
- ^ Parker, William G. (2016-01-21). "Revised phylogenetic analysis of the Aetosauria (Archosauria: Pseudosuchia); assessing the effects of incongruent morphological character sets". PeerJ. 4: e1583. doi:10.7717/peerj.1583. ISSN 2167-8359.
- ^ Hoffman, Devin K.; Heckert, Andrew B.; Zanno, Lindsay E. (2018-02-13). "Under the armor: X-ray computed tomographic reconstruction of the internal skeleton of Coahomasuchus chathamensis (Archosauria: Aetosauria) from the Upper Triassic of North Carolina, USA, and a phylogenetic analysis of Aetosauria". PeerJ. 6: e4368. doi:10.7717/peerj.4368. ISSN 2167-8359.
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