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Aetosauroides scagliai

Reptilia

Taxonomy
Aetosauroides scagliai was named by Casamiquela (1960). Its type specimen is PVL 2073, a set of postcrania (Articulated partial carapace and vertebral column, limbs), and it is a 3D body fossil. Its type locality is Hoyada de Ischiqualasto, upper third, which is in a Carnian/Norian terrestrial horizon in the Ischigualasto Formation of Argentina.

It was synonymized subjectively with Stagonolepis robertsoni by Heckert and Lucas (2000), Lucas and Heckert (2001) and Heckert and Lucas (2002).

Synonyms
Synonymy list
YearName and author
1960Aetosauroides scagliai Casamiquela p. 3 figs. 1-2
1967Aetosauroides scagliai Charig p. 709
1982Aetosauroides subsulcatus Zacarias
1982Aetosauroides inhamandensis Zacharias
1985Aetosauroides inhamandensis Barbarena
2007Aetosauroides scagliai Parker
2011Aetosauroides scagliai Desojo and Ezcurra p. 597
2013Aetosauroides scagliai Desojo et al.
2016Aetosauroides scagliai Parker

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
RankNameAuthor
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
—Pseudosuchia(Zittel 1890)
—SuchiaKrebs 1974
—Aetosauria(Lydekker 1889)
genusAetosauroides
speciesscagliai

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Aetosauroides scagliai Casamiquela 1960
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Invalid names: Aetosauroides inhamandensis Zacharias 1982 [synonym], Aetosauroides subsulcatus Zacarias 1982 [synonym]
Diagnosis
ReferenceDiagnosis
J. B. Desojo and M. D. Ezcurra 2011Aetosaur distinguished from other known pseudosuchian archosaurs, including Stagonolepis, by the following unique combination of apomorphies (autapomorphy with asterisk): maxilla excluded from the margin of the external naris; ventral margin of dentary convex and without sharp inflexion; tooth crowns with straight distal margin and without constriction between root and crown, denticles, and wear facets; cervical and dorsal centra with oval fossae ventral to the neurocentral suture on the lateral sides of the centra; mid- and posterior dorsals with well-developed posterior infradiapophyseal lamina directly below the diapophyses, and postzygapophyses posterolaterally divergent, ratio between the entire length of the postzygapophyses and the width between the distal-most tips of the postzygapophyses equal or lower than 0.75*