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Genusaurus sisteronis

Reptilia - Abelisauridae

Taxonomy
Genusaurus sisteronis was named by Accarie et al. (1995). Its type specimen is MNHN Bev-1, a set of postcrania, and it is not a trace fossil. Its type locality is Sisteron, Bevons (MNHN), which is in an Albian marine sandstone/marl in the Marnes bleues Formation of France. It is the type species of Genusaurus.

Synonymy list
YearName and author
1995Genusaurus sisteronis Accarie et al.
1997Genusaurus sisteronis Currie and Padian p. 369
1998Genusaurus sisteronis Holtz, Jr. p. 39
2003Genusaurus sisteronis Rauhut p. 33
2004Genusaurus sisteronis Juárez Valieri and Fiorelli p. 36
2004Genusaurus sisteronis Tykoski and Rowe p. 49
2006Genusaurus sisteronis Coria et al. p. 1288
2008Genusaurus sisteronis Carrano and Sampson p. 194
2010Genusaurus sisteronis Smith et al. p. 930
2011Genusaurus sisteronis Carrano et al. p. 3
2015Genusaurus sisteronis Torices et al. p. 614

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
RankNameAuthor
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
suborderCeratosauria()
superfamilyAbelisauroidea
familyAbelisauridae
subfamilyMajungasaurinae
genusGenusaurus
speciessisteronis

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
H. Accarie et al. 1995Ceratosaur in which the tibia has an extremely developed cnemial crest.
M. T. Carrano and S. D. Sampson 2008The published diagnosis of Genusaurus (Accarie et al. 1995) no longer serves to distinguish it from other ceratosaurs. The skeleton is very fragmentary and we were unable to identify any autapomorphies on the preserved materials without canonizing obvious morphological minutiae. However, the provenance and small size of the animal strongly suggests that it represents a taxon distinct from other ceratosaurs (as opposed to a genuine ‘metataxon’) and we provisionally accept its validity while awaiting the discovery of additional specimens.