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Placerias hesternus

Anomodontia - Stahleckeriidae

Taxonomy
Placerias hesternus was named by Lucas (1904). Its type specimen is USNM 2198, a limb element (Humerus), and it is a 3D body fossil. Its type locality is 3 miles north of Tanners Crossing, which is in a Norian terrestrial horizon in the Chinle Formation of Arizona. It is the type species of Placerias.

Synonyms
Synonymy list
YearName and author
1904Placerias hesternus Lucas
1930Placerias hesternus Hay p. 63
1956Placerias gigas Camp and Welles
1995Placerias hesternus Long and Murry

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
orderAnomodontiaOwen 1859
orderDicynodontia()
familyStahleckeriidaeCox 1965
subfamilyPlaceriinaeKing 1988
genusPlacerias
specieshesternus

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.

†Placerias hesternus Lucas 1904
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Invalid names: Placerias gigas Camp and Welles 1956 [synonym]
Diagnosis
No diagnoses are available