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Amargatitanis macni

Reptilia

Taxonomy
Amargatitanis macni was named by Apesteguía (2007). Its type specimen is MACN PV N53, a set of postcrania (2 caudal vertebrae and limb remains), and it is a 3D body fossil. Its type locality is La Amarga (site 1), which is in a Barremian channel sandstone in the La Amarga Formation of Argentina.

It was considered a nomen dubium by D'Emic (2012); it was considered a nomen dubium by Mannion et al. (2013).

Synonymy list
YearName and author
2007Amargatitanis macni Apesteguía p. 540 figs. 5-8
2012Amargatitanis macni Grellet-Tinner et al. p. 41
2012Amargatitanis macni Mannion and Otero p. 634
2013Amargatitanis macni Pereda-Suberbiola et al. p. 66
2015Amargatitanis macni de Jesus Faria et al. p. 155
2016Amargatitanis macni Gallina
2021Amargatitanis macni Windholz et al.

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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
subclassEureptilia()
—Romeriida
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropoda()
—Gravisauria
—Eusauropoda
—Neosauropoda
—Diplodocoidea()
—Diplodocimorpha
—Flagellicaudata
—Dicraeosauridae()
genusAmargatitanis
speciesmacni

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.

†Amargatitanis macni Apesteguía 2007
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Diagnosis
ReferenceDiagnosis
S. Apesteguía 2007A. macni is diagnosed by the following associated characters. Robust, wide and flat scapula developed in a single plane, with straight, parallel anterior and posterior borders of the diaphysis. Acromion developed in straight line with respect to the diaphysis. Very short glenoid region, straight articulation for the coracoid, obtuse angle of coracoid articular surface with respect to the glenoid-scapular line, absence of scapular ventromedial process. Femoral fourth trochanter located at mid femur. Femur with a prominent head with respect to a moderately developed distal region. High astragalus with a deep crescent-shaped fossa that bears two pairs of foramina on the upper part of the tibial side of the posterior astragalar fossa. On the fibular side, two foramina are visible also in a deep concavity.