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Altasciurus

Osteichthyes - Rodentia - Aplodontidae

Taxonomy
Altasciurus was named by Korth and Tabrum (2017). Its type is Paramys relictus.

It was assigned to Prosciurinae by Korth and Tabrum (2017), Korth et al. (2022).

Species
A. albiclivus, A. clausulus, A. leonardi, A. relictus
Entered
by C. Boyd on 2018-10-12; modified by J. Marcot on 2026-05-11

Synonymy list
YearName and author
2017Altasciurus Korth and Tabrum pp. 319 - 320
2022Altasciurus Korth et al.

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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()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentia
superfamilySciuroidea
familyAplodontidaeBrandt 1855
subfamilyProsciurinae
genusAltasciurus

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. †Altasciurus Korth and Tabrum 2017
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†Altasciurus albiclivus Korth 1994
†Altasciurus clausulus Korth 2009
†Altasciurus leonardi Korth et al. 2019
†Altasciurus relictus Cope 1873
Diagnosis
ReferenceDiagnosis
W. W. Korth and A. R. Tabrum 2017joins protoloph buccal to protocone; protoloph on upper cheek teeth sigmoid; single metaconule on upper molars; hypolophid on lower molars long, continuous with ectolo- phid on m2–m3.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: fossorialf
Diet: herbivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 12:56:39
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Carroll 1988, Nowak 1991, Lillegraven 1979, Hendy et al. 2009

Age range: base of the Late/Upper Chadronian to the top of the Whitneyan or 37.00000 to 29.50000 Ma

Collections (32 total)


Time interval Ma Country or state Original ID and collection number
Chadronian37.0 - 33.9USA (Wyoming) Prosciurus relictus (17009)
Late/Upper Chadronian - Orellan37.0 - 31.8USA (Nebraska) A. sp., A. relictus, A. albiclivus, A. clausulus (230806)
Orellan33.9 - 31.8USA (Nebraska) Orella uncertain (17207) Prosciurus albiclivus, Prosciurus relictus (17220) Prosciurus relictus (17059 17108 17150 17210 17216 17221 17235 17236 17239 17242 17270 17273 17276)
Orellan33.9 - 31.8Canada (Saskatchewan) Prosciurus relictus (17111)
Orellan33.9 - 31.8USA (North Dakota) Prosciurus albiclivus (17301)
Orellan33.9 - 31.8USA (Wyoming) Prosciurus relictus (17318)
Orellan33.9 - 31.8USA (South Dakota) Prosciurus relictus (17094 17102 17173 17174)
Orellan33.9 - 31.8USA (Montana) Prosciurus relictus (17074 17109 17154)
Orellan33.9 - 31.8USA (Colorado) Prosciurus relictus (17081 17082)
Whitneyan31.8 - 29.5Canada (Saskatchewan) Prosciurus relictus (17372)
Whitneyan31.8 - 29.5USA (South Dakota) Prosciurus relictus (17382) Prosciurus sp. (278678)