Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Madrynornis

Reptilia - Avetheropoda - Spheniscidae

Synonymy list
YearName and author
2007Madrynornis Acosta Hospitaleche et al. p. 301
2008Madrynornis Acosta Hospitaleche and Tambussi p. 123

Is something missing? Join the Paleobiology Database and enter the data

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
RankNameAuthor
SauriaGauthier 1984
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
familySpheniscidaeBonaparte 1831
genusMadrynornis

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 2008Crista occipitalis transversa expanded
into posterolaterally directed wings (not developed in Pygo- scelis), fossa temporalis more triangular and deeper than in Paraptenodytes, processus postorbitalis slender and longer than in Spheniscus, arcus jugalis slightly curved compared to that in Eudyptes and Pygoscelis, interorbital region nar- rower than in Spheniscus and Eudyptes. Sulcus glandulae nasalis without an external edge as in Spheniscus and Par- aptenodytes (edge present in Pygoscelis); lamina parasphe- noidalis broader than in all living species. Ramus mandibiularis straight with the fossa retroarticularis longer than in Paraptenodytes and Spheniscus, and extending beyond the fossa articularis quadratica.