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Piatnitzkysaurus floresi

Reptilia - Piatnitzkysauridae

Taxonomy
Piatnitzkysaurus floresi was named by Bonaparte (1979). Its type specimen is PVL 4073, a partial skeleton, and it is a 3D body fossil. Its type locality is 1 km east of Cerro Cóndor, which is in a Callovian fluvial-lacustrine tuff in the Cañadón Asfalto Formation of Argentina. It is the type species of Piatnitzkysaurus.

Synonymy list
YearName and author
1979Piatnitzkysaurus floresi Bonaparte p. 226
1981Piatnitzkysaurus floresi Bonaparte p. 669
1981Piatnitzkysaurus floresi Molnar et al. p. 145
1984Piatnitzkysaurus floresi Bonaparte p. 135
1986Piatnitzkysaurus floresi Bonaparte
1988Piatnitzkysaurus floresi Paul p. 288
1990Piatnitzkysaurus floresi Molnar et al. p. 189
1996Piatnitzkysaurus floresi Molnar et al. p. 667
1996Piatnitzkysaurus floresi Novas p. 676
1996Piatnitzkysaurus floresi Osmólska p. 28
1997Piatnitzkysaurus floresi Novas p. 681
2000Piatnitzkysaurus floresi Foster and Chure p. 7
2003Piatnitzkysaurus floresi Rauhut p. 20
2004Piatnitzkysaurus floresi Holtz, Jr. et al. p. 72
2005Piatnitzkysaurus floresi Yates p. 117
2006Piatnitzkysaurus floresti Malkani p. 8
2006Piatnitzkysaurus floresi Martínez and Novas p. 244
2007Piatnitzkysaurus floresi Gómez-Fernández et al. p. 97
2007Piatnitzkysaurus floresi Juárez Valieri et al. p. 60
2007Piatnitzkysaurus floresi Rauhut p. 482
2009Piatnitzkysaurus floresi Bever and Norell p. 35
2009Piatnitzkysaurus floresi Wu et al. p. 23
2012Piatnitzkysaurus floresi Carrano et al. pp. 238-239
2014Piatnitzkysaurus floresi Delsate and Ezcurra p. 178

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
RankNameAuthor
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
Orionides
superfamilyMegalosauroidea()
familyPiatnitzkysauridae
genusPiatnitzkysaurus
speciesfloresi

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
J. F. Bonaparte 1986Allosaurid with deep depressions between the basioccipital condyle and the opisthotic process; braincase similar to that of Eustreptospondylus but with more pronounced lateral basisphenoid depressions and alar process of the laterosphenoid. Most postcranial characters comparable to those of Allosaurus, but with a shorter scapula and a coracoid not expanded but subcircular. Pubis with an obturator foramen totally enclosed by an bony lamina and forming a modest neck; ischium less reduced ventrally than that of Allosaurus. Ulna, tibia and femur more slender than in Allosaurus, but proportionally a little more massive than in Dilophosaurus. (Translated by M. Carrano.)
M. T. Carrano et al. 2012Tetanuran with: (1) strongly inflated base of maxillary ascending process (Rauhut 2003); and (2) evenly rounded ventral surfaces of most sacral centra, except sacral 3 bears flat midline strip and sacral 5 is broad and flat (Benson 2010a).