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Zaraalestes russelli

Osteichthyes - 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()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
RankNameAuthor
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
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.

Zaraalestes russelli Storch and Dashzeveg 1997
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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.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: scansorialsubc
Diet: insectivoresubc
Reproduction: viviparoussubc
Created: 2005-09-06 20:43:42
Modified: 2005-09-06 22:44:32
Source: subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, Ji et al. 2002, Hendy et al. 2009, Carroll 1988

Age range: Middle Eocene or 48.07000 to 37.71000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Middle Eocene48.07 - 37.71Mongolia Zaraalestes russelli (type locality: 75718)