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Petrobrasaurus puestohernandezi

Reptilia

Taxonomy
Petrobrasaurus puestohernandezi was named by Filippi et al. (2011). Its type specimen is MAU-Pv-PH-449, a partial skeleton (Two isolated teeth (MAU-Pv-PH-449/1 and 22), posterior portion of possibly middle cervical vertebra (MAU-Pv-PH-449/37), three incomplete posterior dorsal verteb), and it is a 3D body fossil. Its type locality is Puesto Hernández locality, PH 1597 [MAU], which is in a Coniacian/Santonian crevasse splay sandstone/mudstone in the Plottier Formation of Argentina.

Synonymy list
YearName and author
2011Petrobrasaurus puestohernandezi Filippi et al. p. 4
2012Petrobrasaurus puestohernandezi Díez Díaz et al. p. 266
2012Petrobrasaurus puestohernandezi Mannion and Otero p. 634
2013Petrobrasaurus puestohernandezi Canudo et al. p. 20
2015Petrobrasaurus puestohernandezi Filippi p. 24
2015Petrobrasaurus puestohernandezi de Jesus Faria et al. p. 156
2016Petrobrasaurus puestohernandezi Cruzado-Caballero et al. p. 146
2019Petrobrasaurus puestohernandezi Cruzado-Caballero et al. p. 212
2020Petrobrasaurus puestohernandezi Páramo et al. p. 373

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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
RankNameAuthor
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropoda()
—Gravisauria
—Eusauropoda
—Neosauropoda
—Macronaria
—Titanosauriformes
—Titanosauria
genusPetrobrasaurus
speciespuestohernandezi

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.

†Petrobrasaurus puestohernandezi Filippi et al. 2011
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Diagnosis
ReferenceDiagnosis
L. S. Filippi et al. 2011Large sauropod dinosaur characterized by the following combination of derived features: 1) accessory posterior centrodiapophyseal lamina more developed than the posterior centrodiapophyseal lamina; 2) posterior centroparapophyseal lamina extends from the point of contact with the accessory posterior centrodiapophyseal lamina; 3) presence of a broad concave surface delimited by the bony rim of the posterior centroparapophyseal lamina and a rim located on the dorsal edge of the pleurocoel; 4) presence of a deep fossa, sub-circular in outline, on a slightly concave surface delimited by the accessory posterior centrodiapophyseal lamina, the posterior centrodiapophyseal lamina, and a bony rim corresponding to the extension of the posterior centroparapophyseal lamina; 5) presence of a T-shaped anteroposterior expansion on the laminae of the neural arch (pcdl and apcdl); and the anterior caudal vertebrae characterized by: 6) the presence of a deep fossa between the spinoprezygapophyseal lamina and the postzygapophysis, bearing small fossae; 7) prespinal lamina distally thickened; 8) sub-circular small fossae on both sides of the base of the prespinal lamina; and 9) presence of a T-shaped anteroposterior expansion in the spinoprezygapophyseal lamina.