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Arcusaurus pereirabdalorum

Reptilia

Taxonomy
Arcusaurus pereirabdalorum was named by Yates et al. (2011). Its type specimen is BP/1/6235, a partial skull, and it is a 3D body fossil. Its type locality is Sauropod Quarry, farm Spion Kop 932 (BPI), which is in a Hettangian/Sinemurian coarse channel fill siltstone/sandstone in the Elliot Formation of South Africa.

Synonymy list
YearName and author
2011Arcusaurus pereirabdalorum Yates et al. pp. 611-612 figs. 2-12
2021Arcusaurus pereirabdalorum Peyre de Fabrègues et al. p. 327

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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()
—Amniota
—Sauropsida
classReptilia
RankNameAuthor
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Eusaurischia
—Sauropodomorpha(Huene 1932)
genusArcusaurus
speciespereirabdalorum

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.

†Arcusaurus pereirabdalorum Yates et al. 2011
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Diagnosis
ReferenceDiagnosis
A. M. Yates et al. 2011Basal sauropodomorph with following autapomorphies: presence of horizontal medial shelf projecting from dorsal margin of the premaxillary body and offset caudally by a notch; base of caudomedial process expanded into a horizontal palatal shelf that protrudes medially to contact its antimere; postorbital with an articulation surface for the parietal borne on dorsally projecting, semilunate process; fine ridge on nasal extending from medial edge of prefrontal embayment to a point near center of bone; tongue-shaped rostroventral process of nasal; dentary with a single enlarged neurovascular foramen opening near the rostral tip of the lateral surface; distal caudal vertebra with dorsoventrally compressed centrum (cranial centrum face 1.43 times wider than high).
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988

Age range: base of the Hettangian to the top of the Sinemurian or 201.30000 to 190.80000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Hettangian - Sinemurian201.3 - 190.8South Africa (Free State) Sauropodomorpha indet. (type locality: 76191)