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Albalophosaurus yamaguchiorum

Reptilia

Taxonomy
Albalophosaurus yamaguchiorum was named by Ohashi and Barrett (2009). Its type specimen is SBEI 176, a partial skull, and it is a compression fossil. Its type locality is Kaseki-kabe (facies III), Shiramine, which is in a Barremian mire/swamp mudstone/sandstone in the Kuwajima Formation of Japan. It is the type species of Albalophosaurus.

Synonymy list
YearName and author
2009Albalophosaurus yamaguchiorum Ohashi and Barrett p. 749 figs. 2-7
2010Albalophosaurus yamaguchiorum Amiot et al. p. 354
2012Albalophosaurus yamaguchiorum Han et al. p. 1391 fig. 14
2017Albalophosaurus yamaguchiorum Sano and Yabe p. 256

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
RankNameAuthor
subclassEureptilia()
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Genasauria
Cerapoda
Marginocephalia
Ceratopsia()
genusAlbalophosaurus
speciesyamaguchiorum

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.

Albalophosaurus yamaguchiorum Ohashi and Barrett 2009
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Diagnosis
ReferenceDiagnosis
T. Ohashi and P. M. Barrett 2009The specimen possesses several unique character combinations, which can be regarded as autapomorphies among basal ornithischians. The lateral surface of the maxilla lacks a buccal emargination, but an exceptionally deep, well defined cheek recess is present on the lateral surface of the dentary; and the labial surfaces of the maxillary tooth crowns are ornamented with 10–12 fine striations.