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Petrobrasaurus puestohernandezi

Reptilia - Titanosauridae

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 PH 1597, Rincón de los Sauces, which is in a Coniacian/Santonian crevasse splay 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

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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
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
RankNameAuthor
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Eusaurischia
Sauropodomorpha(Huene 1932)
Massopoda
Sauropodiformes
Sauropoda()
Eusauropoda
Neosauropoda
Macronaria
Titanosauriformes
Somphospondyli
Titanosauria
familyTitanosauridae
EutitanosauriaSanz et al. 1999
Lithostrotia
familySaltasauridae
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.

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.
Measurements
No measurements are available
Composition: hydroxyapatiteinfrao
Entire body: yesinfrao
Adult length: 10 to < 100infrao
Adult width: 10 to < 100infrao
Adult height: 10 to < 100infrao
Thickness: thickinfrao
Architecture: compact or denseinfrao
Form: sphericalinfrao
Ontogeny: accretion, modification of partsinfrao
Grouping: gregariousinfrao
Environment: terrestrialinfrao
Locomotion: actively mobileinfrao
Life habit: ground dwellinginfrao
Diet: herbivoreinfrao
Reproduction: oviparousinfrao
Dispersal: direct/internalinfrao
Dispersal 2: mobileinfrao
Created: 2004-12-14 12:49:10
Modified: 2004-12-14 14:49:10
Source: infrao = infraorder
References: Kiessling 2004, Marsh 1875

Age range: base of the Late/Upper Coniacian to the top of the Early/Lower Santonian or 89.30000 to 83.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Coniacian - Early/Lower Santonian89.3 - 83.5Argentina (Neuquén) Petrobrasaurus puestohernandezi (type locality: 117450)