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Bajadasaurus pronuspinax

Reptilia

Taxonomy
Bajadasaurus pronuspinax was named by Gallina et al. (2019). Its type specimen is MMCh-PV 75, a partial skeleton, and it is a 3D body fossil. Its type locality is Bajada Colorada locality (main), which is in a Berriasian/Valanginian fluvial sandstone/conglomerate in the Bajada Colorada Formation of Argentina.

Synonymy list
YearName and author
2019Bajadasaurus pronuspinax Gallina et al.
2021Bajadasaurus pronuspinax Gallina et al. p. 46

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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()
genusBajadasaurus
speciespronuspinax

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.

†Bajadasaurus pronuspinax Gallina et al. 2019
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Diagnosis
ReferenceDiagnosis
P. A. Gallina et al. 2019Bajadasaurus pronuspinax can be diagnosed by the following autapomorphies (marked by an asterisk), as well as a unique combination of character states: post-temporal fenestra extended medially with a long parietal contribution (*); basipterygoid processes extremely slender and long, more than six times longer than lateromedially wide (*); elongate angular, longer than the anteroposterior surangular length; neural spine of the axis oriented vertically (*); paired, anteriorly curved, and extremely elongate bifid neural spines of anterior-mid cervical vertebrae (*).