PBDB Taxon

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

Hypisodus

Mammalia - Hypisodontidae

Taxonomy

Hypisodus was named by Cope (1873).

It was assigned to Leptomerycinae by Hay (1902); to Hypisodontinae by Matthew (1908), Scott (1940) and Gazin (1955); to Hypertragulidae by Cope (1873), Cook (1934), Johnson (1966), Carroll (1988) and Vislobokova (1998); and to Hypisodontidae by Vislobokova (2001) and Korth et al. (2022).

Species

H. alacer, H. ironsi, H. minimus, H. paululus, H. retallacki, H. ringens

Synonymy list

Year	Name and author
1873	Hypisodus Cope
1902	Hypisodus Hay p. 672
1908	Hypisodus Matthew p. 561
1934	Hypisodus Cook p. 156
1940	Hypisodus Scott p. 524
1955	Hypisodus Gazin p. 44
1966	Hypisodus Johnson p. 80
1988	Hypisodus Carroll
1998	Hypisodus Vislobokova
2001	Hypisodus Vislobokova p. S136
2022	Hypisodus 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	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes

Rank	Name	Author
class	Mammalia
—	Theriamorpha	(Rowe 1993)
—	Theriiformes	()
—	Trechnotheria
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
—	Artiodactylamorpha
—	Artiodactyla	()
—	Ruminantiamorpha
—	Ruminantia	(Scopoli 1777)
infraorder	Tragulina
superfamily	Hypertraguloidea
family	Hypisodontidae
genus	Hypisodus

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. †Hypisodus Cope 1873

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†Hypisodus alacer Troxell 1920

†Hypisodus ironsi Cook 1934

†Hypisodus minimus Cope 1873

†Hypisodus paululus Cook 1934

†Hypisodus retallacki Meehan and Martin 2004

†Hypisodus ringens Cope 1873

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialo

Locomotion:

actively mobilec

Life habit:

ground dwellingo

Diet:

grazero

Diet 2:

browsero

Reproduction:

viviparoussubc

Created:

2005-08-26 14:03:05

Modified:

2005-09-19 12:23:23

Source: o = order, subc = subclass, c = class, subp = subphylum

References: Hendy et al. 2009, Carroll 1988, Lillegraven 1979, Nowak 1999

Age range: base of the Chadronian to the top of the Geringian or 37.20000 to 26.30000 Ma

Collections (35 total)

Time interval	Ma	Country or state	Original ID and collection number
Chadronian	37.2 - 33.9	USA (Wyoming)	H. sp. (16960 16961 16962 16963 16964 16965)
Chadronian	37.2 - 33.9	USA (Nebraska)	H. minimus (16917 16940 16941 17014) H. minimus, H. paululus (16930)
Chadronian	37.2 - 33.9	USA (Colorado)	H. sp. (16977)
Late/Upper Chadronian	37.2 - 33.9	USA (Montana)	H. minimus (17027)
Late/Upper Chadronian - Orellan	37.2 - 33.3	USA (Nebraska)	H. minimus (230806)
Orellan	33.9 - 33.3	USA (South Dakota)	H. minimus (17102 17174) H. sp. (17187 17188 17189)
Orellan	33.9 - 33.3	USA (Wyoming)	H. alacer (17117) H. minimus (17318)
Orellan	33.9 - 33.3	USA (Nebraska)	H. alacer (17059 17297) H. minimus (17062 17098 17108)
Orellan	33.9 - 33.3	USA (Colorado)	H. minimus (17081 17082 17083)
Whitneyan	33.3 - 30.8	USA (Colorado)	H. minimus (17426)
Whitneyan	33.3 - 30.8	USA (South Dakota)	H. sp. (17337 17384)
Whitneyan	33.3 - 30.8	USA (Nebraska)	H. ironsi (17346) H. retallacki (17391)
Geringian	30.8 - 26.3	USA (Nebraska)	H. sp. (17494)