PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Apatemys

Mammalia - Apatemyidae

Taxonomy

Apatemys was named by Marsh (1872). Its type is Apatemys bellus.

It was assigned to Ischyromyidae by Hay (1902); to Plesiadapidae by Matthew (1917) and Hay (1930); to Apatemyinae by Van Valen (1967); and to Apatemyidae by Marsh (1872), Simpson (1940), Russell et al. (1979), Hooker (1986), Gunnell (1989), McKenna and Bell (1997), Silcox et al. (2010) and Korth et al. (2022).

Species

A. bellulus (syn. Teilhardella whitakeri, A. hurzeleri), A. bellus (type species), A. chardini, A. downsi, A. hendryi, A. mutiniacus, A. prouti, A. pygmaeus, A. rodens, A. sigogneauae, A. sigogneaui, A. teilhardi, Stehlinius uintensis

Synonyms

Stehlinius was named by Matthew (1921) [preoccupied]. Its type is Stehlinius uintensis.

It was replaced with Stehlinella by Matthew (1929), Gazin (1958), McKenna (1963) and Van Valen (1967); it was synonymized subjectively with Apatemys by West (1973).

It was assigned to Plesiadapidae by Hay (1930).

Synonymy list

Year	Name and author
1872	Apatemys Marsh
1902	Apatemys Hay p. 725
1917	Apatemys Matthew p. 833
1921	Stehlinius Matthew
1930	Apatemys Hay p. 445
1930	Stehlinius Hay p. 447
1940	Apatemys Simpson p. 203
1967	Apatemys Van Valen
1979	Apatemys Russell et al.
1986	Apatemys Hooker p. 327
1989	Apatemys Gunnell p. 147
1997	Apatemys McKenna and Bell
2010	Apatemys Silcox et al.
2022	Apatemys Korth et al.

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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	()

Rank	Name	Author
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Cimolesta	()
suborder	Apatotheria	(Scott and Jepsen 1936)
family	Apatemyidae
genus	Apatemys

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.

G. †Apatemys Marsh 1872

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†Apatemys bellulus Marsh 1872

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Invalid names: Apatemys hurzeleri Gazin 1962 [synonym], Teilhardella whitakeri Simpson 1954 [synonym]

†Apatemys bellus Marsh 1872

†Apatemys chardini Jepsen 1930

†Apatemys downsi Gazin 1958

†Apatemys hendryi Robinson 1966

†Apatemys mutiniacus Russell et al. 1979

†Apatemys prouti Hooker 2010

†Apatemys pygmaeus Beard and Dawson 2009

†Apatemys rodens Troxell 1923

†Apatemys sigogneauae Russell et al. 1979

†Apatemys sigogneaui Russell et al. 1979

†Apatemys teilhardi Russell et al. 1979

Invalid names: Stehlinius Matthew 1921 [synonym]

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: Hendy et al. 2009, Ji et al. 2002, Carroll 1988, Tanaka and Taruno 2019

Age range: base of the Graybullian to the top of the Duchesnean or 55.80000 to 37.00000 Ma

Collections (98 total)

Time interval	Ma	Country or state	Original ID and collection number
Ypresian	56.0 - 47.8	France (Île-de-France)	A. sigogneaui (68437)
Ypresian	56.0 - 47.8	Belgium (Brabant)	A. sp., A. teilhardi (35531)
Ypresian	56.0 - 47.8	France (Marne)	A. mutiniacus, A. sigogneaui (35535) A. sigogneaui (35537) A. sp., A. mutiniacus, A. sigogneaui (35533)
Ypresian	56.0 - 47.8	United Kingdom (England)	A. prouti (38868)
Graybullian	55.8 - 50.3	USA (Wyoming)	A. sp. (15701)
Lostcabinian	55.8 - 50.3	USA (Wyoming)	A. bellulus (16078) A. sp. (15917 15930)
Lysitean - Lostcabinian	55.8 - 50.3	USA (Wyoming)	A. sp. (15451)
Wasatchian	55.8 - 50.3	USA (Mississippi)	A. sp. (15719)
Wasatchian	55.8 - 50.3	USA (New Mexico)	A. bellulus (15663)
Wasatchian	55.8 - 50.3	USA (Wyoming)	A. bellulus (15559) A. bellulus, A. rodens (15576) A. bellus (46810) A. chardini (16032) A. hurzeleri (15662) A. rodens (15552 15577) A. sp. (15454 15455 15458 15573 15580 15673 27268 46729 46780 46795 46815 118482) A. whitakeri (15910 15964 186936)
Early/Lower Eocene	55.8 - 48.6	Portugal (Região Centro)	A. sp. (79200)
Early/Lower Eocene	55.8 - 48.6	France (Var)	A. sp. (35538)
Early/Lower Eocene	55.8 - 48.6	France (Corbieres)	A. sp. (92838)
Bridgerian	50.3 - 46.2	USA (Nevada)	A. bellus (16218)
Bridgerian	50.3 - 46.2	USA (Wyoming)	A. bellulus (16100 16109 16111 16116 16203 16207 16219 16235 16273 16313 16315 16332 16345 16415 16499) A. bellus (16216 16217 16227 16228 16236 16253 16254 16283 16284 16294 16399 16402 16418 16502 16647) A. sp. (15837 16244 16296 16416)
Bridgerian	50.3 - 46.2	USA (Utah)	A. bellulus, A. bellus, A. rodens (16396)
Early/Lower Uintan	46.2 - 39.7	USA (Wyoming)	A. bellulus, A. rodens (93087) A. rodens (186964 186966)
Early/Lower Uintan	46.2 - 39.7	USA (California)	A. bellus (16706 16716 16733 16746 16751 16752) A. sp. (16764)
Late/Upper Uintan	46.2 - 39.7	Canada (Saskatchewan)	A. hendryi (16626)
Late/Upper Uintan	46.2 - 39.7	USA (California)	A. sp. (16585)
Uintan	46.2 - 39.7	USA (California)	A. downsi (16786) A. uintensis (16573 16590)
Uintan	46.2 - 39.7	USA (Wyoming)	A. bellus (16515) A. bellus, A. hendryi (16514) A. sp. (16630)
Uintan	46.2 - 39.7	USA (Utah)	A. uintensis (16646)
Duchesnean	39.7 - 37.0	Canada (Saskatchewan)	A. sp., A. hendryi (16845)
Chadronian	37.2 - 33.9	Canada (Saskatchewan)	A. sp. (16919)
Chadronian	37.2 - 33.9	USA (Nebraska)	A. downsi (17014 186972)
Late/Upper Chadronian - Orellan	37.2 - 33.3	USA (Nebraska)	A. sp. (230806)