PBDB Taxon

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Zaraalestes minutus

Mammalia - Changlelestidae

Taxonomy

Tupaiodon minutus was named by Matthew and Granger (1924) [Matthew & Granger put a question mark to the generic assignment]. It is not extant. Its type specimen is AMNH 19135, a mandible (dext. with p3-m1).

It was recombined as Zaraalestes minutus by Storch and Dashzeveg (1997).

Synonyms

Ictopidium tatalgolensis was named by Sulimski (1970). Its type specimen is Z. Pal Mgm-III/4, a mandible (dext. with i1-p2, p4-m3), and it is not a trace fossil. Its type locality is Khatan Khayrkhan, which is in an Oligocene terrestrial horizon in Mongolia.

It was synonymized subjectively with Zaraalestes minutus by Lopatin (2003) and Ziegler et al. (2007).

Synonymy list

Year	Name and author
1924	Tupaiodon minutus Matthew and Granger p. 2
1970	Ictopidium tatalgolensis Sulimski p. 55
1997	Zaraalestes minutus Storch and Dashzeveg p. 438

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()

Rank	Name	Author
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Theriamorpha	(Rowe 1993)
—	Theriiformes	()
—	Trechnotheria
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Eulipotyphla
suborder	Soricomorpha	Gregory 1910
family	Changlelestidae
subfamily	Tupaiodontinae	Butler 1988
genus	Zaraalestes
species	minutus	()

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 minutus Matthew and Granger 1924

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Invalid names: Ictopidium tatalgolensis Sulimski 1970 [synonym]

Diagnosis

Reference	Diagnosis
W. D. Matthew and W. Granger 1924	Somewhat smaller than T. morrisi, the molars of nearly the same size, but narrower, with distinct external cingulum; anterior part of lower jaw much more slender and weak; p3 two-rooted, simple, with single acute uncompressed cusp, minute anterior basal cusp and well-developed posterior basal cingulum; p4 sub-molariform but smaller than molars, having two well-separated cusps, a lower anterir cusp and a broad low cingulum encircling posterior end of tooth.
A. Sulimski 1970 (Ictopidium tatalgolensis)	Incisors obliquely situated, p2 small, simple, single-rooted. The crown of p3 moderately compressed; paraconid small; metaconid present, weak; labial cingulum present delicate. Paraconid of p4 large, sharp; labial cingulum present, delicate. m1 larger or equal to m2. Protoconid of m1 well developed; metaconid lower than protoconid; hypoconulid often lacking; posterior cingulum well visible; labial cingulum well marked, below hypoconid sometimes lacking. m3 smallr or equal to m2, without hypoconulid.