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Pygoscelis grandis

Reptilia - Spheniscidae

Taxonomy
Pygoscelis grandis was named by Walsh and Suarez (2006). Its type specimen is SGOPV-1104, a partial skeleton, and it is a 3D body fossil. Its type locality is Bahía Inglesa Unit 3, which is in a Zanclean marine conglomerate in the Bahía Inglesa Formation of Chile.

Synonymy list
YearName and author
2006Pygoscelis grandis Walsh and Suarez p. 117 figs. Fig. 2-5
2007Pygoscelis grandis Chavez p. 554
2008Pygoscelis grandis Acosta Hospitaleche and Tambussi p. 122

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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()
—Archosauromorpha(Huene 1946)
—Crocopoda
RankNameAuthor
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
classAves
subclassNeornithesGadow 1893
—Aequornithes
—Feraequornithes
superorderProcellariimorphae
—Sphenisciformes(Sharpe 1891)
familySpheniscidaeBonaparte 1831
genusPygoscelisWagler 1832
speciesgrandis

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.

†Pygoscelis grandis Walsh and Suarez 2006
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Diagnosis
ReferenceDiagnosis
C. Acosta Hospitaleche and C. Tambussi 2008Larger than any other species of the ge- nus. Craniocaudal compression of tibiotarsus not marked; sulcus extensorius broad relative to diaphyseal width and situated on lateral margin of diaphysis; foramen vasculare proximale laterale larger than the medialis, greatest diaphy- sial width of humerus 24%; fossa tricipitalis weakly bipar- tite; without fusion of ilium and synsacrum, ilioischiatic foramen larger than the acetabular; femur curved in anterior view; tubercule for the retinaculi m. fibularis well developed; condylus mediale of tibiotarsus extends further than the laterale (Walsh & Suárez, 2006).