Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Abrictosaurus consors

Reptilia - Heterodontosauridae

Taxonomy
Lycorhinus consors was named by Thulborn (1974). Its type specimen is UCL B54, a partial skeleton, and it is not a trace fossil. Its type locality is Noosi (UCL), which is in a Hettangian/Sinemurian terrestrial sandstone in the Elliot Formation of Lesotho. It is the type species of Abrictosaurus.

It was recombined as Abrictosaurus consors by Hopson (1975), Weishampel and Weishampel (1983), Olsen and Galton (1984), Weishampel and Witmer (1990), Weishampel and Heinrich (1992), Smith (1997), Norman et al. (2004), Butler et al. (2007), Butler et al. (2008), Irmis and Knoll (2008), Sereno (2012) and Han et al. (2012).

Synonymy list
YearName and author
1974Lycorhinus consors Thulborn p. 153 figs. 2-4
1975Abrictosaurus consors Hopson pp. 304-305
1978Lycorhinus consors Thuborn p. 187
1983Abrictosaurus consors Weishampel and Weishampel p. 44
1984Abrictosaurus consors Olsen and Galton p. 91
1990Abrictosaurus consors Weishampel and Witmer p. 487
1992Abrictosaurus consors Weishampel and Heinrich p. 173
1997Abrictosaurus consors Smith p. 317
2004Abrictosaurus consors Norman et al. p. 394
2007Abrictosaurus consors Butler et al. p. S14
2008Abrictosaurus consors Butler et al. p. 8
2008Abrictosaurus consors Irmis and Knoll p. 123
2012Abrictosaurus consors Han et al. p. 1391 fig. 14
2012Abrictosaurus consors Sereno p. 69 figs. 5A, 31-37

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
familyHeterodontosauridae
genusAbrictosaurus
speciesconsors()

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.

Diagnosis
ReferenceDiagnosis
R. J. Butler et al. 2008Arched diastema between premaxilla and maxilla present; enlarged caniniform teeth absent from the premaxilla and dentary.
P. C. Sereno 2012Heterodontosaurid ornithischian characterized by the follow- ing autapomorphies: (1) premaxillary tooth 2 and 3 with tall, subcylindrical crowns, the latter possibly representing a reduced caniniform tooth; (2) dentary tooth 2 with subcylindrical crown, possibly representing a reduced caniniform tooth; (3) maxillary and dentary teeth with flat lateral and medial crown surfaces lacking discrete marginal or median ridges; and (4) maxillary crowns in the middle of the tooth row have deep parallel-sided crowns that do not expand in mesiodistal width toward their apex. Un- like other heterodontosaurids, there is no dentary or premaxillary caniniform teeth, although both the dentary and premaxillary have teeth with subcylindrical crowns that may be reduced caniniform teeth.