PBDB Taxon

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

Aplodontia (mountain beaver)

Osteichthyes - Rodentia - Aplodontidae

Taxonomy

Aplodontia was named by Richardson (1829). It is extant.

It was assigned to Aplodontidae by Kurten and Anderson (1980), McKenna and Bell (1997).

Species

A. chryseola, A. humboldtiana, A. micra, A. nigra, A. rufa (syn. A. pacifica, A. leporina, A. phaea, A. major, A. olympica)

Synonymy list

Year	Name and author
1829	Aplodontia Richardson
1980	Aplodontia Kurten and Anderson p. 209
1997	Aplodontia McKenna and Bell

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

Rank	Name	Author
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Euarchontoglires	Murphy et al. 2001
—	Gliriformes	Wyss and Meng 1996
—	Glires	()
—	Simplicidentata	()
order	Rodentia	Bowdich 1821
superfamily	Sciuroidea
family	Aplodontidae	Brandt 1855
genus	Aplodontia	Richardson 1829

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. Aplodontia Richardson 1829 [mountain beaver]

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Aplodontia chryseola Kellogg 1914

Aplodontia humboldtiana Taylor 1916

†Aplodontia micra Hopkins 2019

Aplodontia nigra Taylor 1914

Aplodontia rufa Rafinesque 1817 [mountain beaver]

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Invalid names: Aplodontia leporina Richardson 1829 [synonym], Aplodontia major Merriam 1886 [synonym], Aplodontia pacifica Merriam 1899 [synonym], Aplodontia phaea Merriam 1899 [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

semifossorialg

Diet:

herbivoref

Reproduction:

viviparoussubc

Comments:

incorrectly listed as fossorial Samuels and Van Valkenburgh 2008g

Created:

2011-05-12 18:09:17

Modified:

2012-05-14 21:36:43

Source: g = genus, f = family, subc = subclass, c = class, subp = subphylum

References: Nowak 1991, Ji et al. 2002, Carroll 1988, Hendy et al. 2009, Dunn and Rasmussen 2007, Lillegraven 1979

Age range

Maximum range based only on fossils: base of the Hemphillian to the top of the Rancholabrean or 9.40000 to 0.01400 Ma
Minimum age of oldest fossil (stem group age): 4.7 Ma

Collections (8 total)

Time interval	Ma	Country or state	Original ID and collection number
Hemphillian	9.4 - 4.7	USA (Oregon)	Liodontia sp. (18970)
Quaternary	2.58 - 0.0	USA (Oregon)	Aplodontia sp. (275384)
Rancholabrean	0.21 - 0.014	USA (California)	Aplodontia sp. (225558)
Late/Upper Pleistocene (glacial)	0.129 - 0.0117	USA (California)	Aplodontia major (155393)
Late/Upper Pleistocene	0.129 - 0.0117	USA (California)	Aplodontia major (93250) Aplodontia rufa (225801) Aplodontia rufa, Aplodontia major (74235) Aplodontia sp. (155409)