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Meroktenos thabanensis

Reptilia -

Taxonomy
Melanorosaurus thabanensis was named by Gauffre (1993). It is not extant. Its type specimen is MNHN LES-16. Its type locality is Thabana-Morena (zone A/6), which is in a Triassic terrestrial horizon in the Elliot Formation of Lesotho. It is the type species of Meroktenos.

It was recombined as Meroktenos thabanensis by Peyre de Fabrègues and Allain (2016).

Synonymy list
YearName and author
1993Melanorosaurus thabanensis Gauffre p. 650 figs. 2-3
1997Melanorosaurus thabanensis Heerden and Galton
2004Melanorosaurus thabanensis Galton and Upchurch p. 235
2010Melanorosaurus thabaensi Bandyopadhyay et al. p. 536
2016Meroktenos thabanensis Peyre de Fabrègues and Allain p. 5–6

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
RankNameAuthor
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Eusaurischia
Sauropodomorpha(Huene 1932)
Massopoda
Sauropodiformes
genusMeroktenos
speciesthabanensis()

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
C. Peyre de Fabrègues and R. Allain 2016A basal sauropodomorph with the following unique combination of characters: depth of the iliac blade (from the most dorsal point of the supracetabular crest to the dorsal margin of the ilium) being 60% of the total height of the ilium (all other basal sauropodomorphs from Southern Africa have a ratio <0.5), subtriangular postacetabular process, very stocky femur (robustness index: 2.09, with the exception of Antetonitrus all other basal sauropodomorphs from Southern Africa have an index >2.18) with a straight shaft in anterior and lateral views, shaft significantly wider lateromedially than anteroposteriorly deep (eccentricity: 1.58, except Antetonitrus all the other basal sauropodomorphs from Southern Africa have an index <1.41) and bearing an oblique fourth trochanter.