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Scirrotherium

Mammalia - Pampatheriidae

Taxonomy
Scirrotherium was named by Edmund and Theodor (1997) [Etymology: greek, skiros, a hard cevering, and therion, a wild beast]. Its type is Scirrotherium hondaensis.

It was assigned to Pampatheriidae by Edmund and Theodor (1997) and Candela et al. (2012).

Synonymy list
YearName and author
1997Scirrotherium Edmund and Theodor
2012Scirrotherium Candela et al. p. 520

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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()
RankNameAuthor
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
Americatheria
Xenarthra()
Cingulata()
superfamilyGlyptodontoideaGray 1869
familyPampatheriidaePaula Couto 1954
genusScirrotherium

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
G. Edmund and J. Theodor 1997A small pampathere, slightly larger than Vassallia minuta, but smaller than Kraglievichia paranensis. General features of skull resemble those of pampatheres. Anterior four upper teeth generally cylindrical. M4 elongate-ovate. Teeth M5 to M8 clearly bilobate, with emarginations on the medial side in all, also on the lingual side of some specimens; M9 varies, often reniform or egg shapped. Mandible relatively shallow dorsoventrally, elongate; ascending ramus broad anteroposteriorly. Lower dentition resembles upper. Skeletal elements almost identical with those of other pampatheres. Two facets of the astragalo-calcaneal articulation well separated. Osteoderms approximately the size of V.minuta; half are hexagonal in outline. Typical buckler osteoderm has small number of well-spaced follicular pits connected by distinct channel. Submarginal band continous, confluent posteriorly with elongate central figure.