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Zaraalestes russelli

Mammalia - Changlelestidae

Taxonomy
Zaraalestes russelli was named by Storch and Dashzeveg (1997). Its type specimen is PSS 39-1, a maxilla (dext. with P4-M2), and it is not a trace fossil. Its type locality is Tsagan Tsav, which is in an Eocene terrestrial horizon in Mongolia. It is the type species of Zaraalestes.

Synonymy list
YearName and author
1997Zaraalestes russelli Storch and Dashzeveg p. 440 figs. Fig. 1

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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
Laurasiatheria
Eulipotyphla
suborderSoricomorphaGregory 1910
familyChanglelestidae
subfamilyTupaiodontinaeButler 1988
genusZaraalestes
speciesrusselli

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. Storch and D. Dashzeveg 1997Distinct from Z. minutus by the following features: p4 with raised posterolingual cusp on talonid heel, sharp paracristid, and lingual crest running from apex of paraconid to base of trigonid valley. Trigonid of m2-3 strongly compressed anteroposteriorly and paraconid oriented transversely. Talonid of m2 wider than trigonid. Entoconid of m1-3 voluminous, with flat labial face. Hypoconulid of m3 large and distinctly protruding posteriorly. Mental foramen below p3-p4 boundary.