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Palaeospheniscus bilocular

Reptilia - Avetheropoda

Taxonomy
Chubutodyptes biloculata was named by Simpson (1970). Its type specimen is AMNH 3346, a set of postcrania (right humerus), and it is not a trace fossil. Its type locality is Cerro del Castillo, Trelew, which is in an Aquitanian/Burdigalian shallow subtidal sandstone in the Gaiman Formation of Argentina.

It was recombined as Palaeospheniscus bilocular by Acosta Hospitaleche (2007); it was recombined as Palaeospheniscus biloculata by Acosta Hospitaleche and Tambussi (2008).

Synonymy list
YearName and author
1970Chubutodyptes biloculata Simpson p. 22 figs. Plate 4
1972Chubutodyptes biloculata Simpson p. 17
2007Palaeospheniscus bilocular Acosta Hospitaleche
2008Palaeospheniscus biloculata Acosta Hospitaleche and Tambussi p. 117

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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
RankNameAuthor
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptora
Paraves
classAves
orderSphenisciformesSharpe 1891
subfamilyPalaeospheniscinae
genusPalaeospheniscus
speciesbilocular()

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
C. Acosta Hospitaleche and C. Tambussi 2008Tarsometatarsus. Total length more than 43 mm, be- ing the largest species of the genus. Lateral divergence of the trochlea for digit II greater than in P. bergi and P. biloculata. Crista lateralis hypotarsi more developed than in the other species of the genus, reaching the fossa supratrochlearis plantaris. Absence of a crista intermediate hypotarsi.