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Hystrix arayanensis

Mammalia - Rodentia - Hystricidae

Taxonomy
Hystrix arayanensis was named by Sen (2001). Its type specimen is MNHN MOL-51, a partial skull (incomplete with basicranium and palate, preserving D4-M3 dext and D4-M2 sin.), and it is not a trace fossil. Its type locality is Molayan, which is in a Turolian fluvial claystone in the Khurdkabul Formation of Afghanistan.

Synonymy list
YearName and author
2001Hystrix arayanensis Sen p. 916 figs. Pl. 1 fig. 2

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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
Synapsida()
Therapsida()
RankNameAuthor
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
EuarchontogliresMurphy et al. 2001
Glires()
orderRodentia
suborderHystricomorpha
infraorderHystricognathi(Tullberg 1899)
familyHystricidaeFischer de Waldheim 1817
genusHystrix
speciesarayanensis

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
S. Sen 2001Size similar to that of Hystrix cristata. Low crowned upper molars with four roots; M1 longer than M2; D4, P4 and upper molars with four major labial synclines; Syncline II and sinus strongly connected; presence of a labial posterior cusp in syncline III.