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Labidolemur kayi

Mammalia - Apatemyidae

Taxonomy
Labidolemur kayi was named by Simpson (1929). Its type specimen is CM 11703, a mandible (part of left lower jaw with P4-M3), and it is a 3D body fossil. Its type locality is Bear Creek, which is in a Clarkforkian terrestrial horizon in the Fort Union Formation of Montana.

It was recombined as Apatemys kayi by McKenna (1960), McKenna (1961), McKenna (1963), Krishtalka et al. (1975), Russell (1979), Bown and Schankler (1982); it was synonymized subjectively with Apatemys bellus by West (1973).

Synonymy list
YearName and author
1929Labidolemur kayi Simpson
1960Apatemys kayi McKenna
1961Apatemys kayi McKenna
1963Apatemys kayi McKenna
1975Apatemys kayi Krishtalka et al.
1979Apatemys kayi Russell
1982Apatemys kayi Bown and Schankler
1982Labidolemur kayi Gingerich and Rose
1989Labidolemur kayi Gunnell
2010Labidolemur kayi Silcox et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
RankNameAuthor
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Cimolesta()
suborderApatotheria(Scott and Jepsen 1936)
familyApatemyidae
genusLabidolemur
specieskayi

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.

†Labidolemur kayi Simpson 1929
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialf
Locomotion: actively mobilec
Life habit: arborealf
Diet: herbivoref
Reproduction: viviparousf
Created: 2005-09-22 09:57:14
Modified: 2005-09-22 11:57:14
Source: f = family, c = class, subp = subphylum
References: Tanaka and Taruno 2019, Ji et al. 2002, Hendy et al. 2009, Carroll 1988

Age range: base of the Late/Upper Paleocene to the top of the Wasatchian or 59.24000 to 50.50000 Ma

Collections (28 total)


Time interval Ma Country or state Original ID and collection number
Tiffanian60.9 - 56.2USA (Wyoming) Apatemys kayi (15036)
Late/Upper Paleocene - Early/Lower Eocene59.24 - 48.07USA (Wyoming) Labidolemur kayi (80579)
Clarkforkian56.2 - 54.9USA (Wyoming) Apatemys sp. (15148) Labidolemur kayi (15072 15085 15089 15119 68476 239208)
Clarkforkian56.2 - 54.9USA (Montana) Apatemys kayi (type locality: 15079)
Wasatchian54.9 - 50.5USA (Colorado) Apatemys kayi (15450 15480 15485 15660 15725 15845) Apatemys sp. (15887)
Wasatchian54.9 - 50.5USA (Wyoming) Apatemys kayi (15516) Labidolemur kayi (15510 15518 15531 15548 15554 15563 15586 15738 46657 46808)