PBDB Taxon

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

Cosoryx

Mammalia - Antilocapridae

Taxonomy

Cosoryx was named by Leidy (1869). It is not extant.

It was synonymized subjectively with Merycodus by Hay (1902), Matthew (1904), Douglass (1909), Henshaw (1939), Gregory (1942), Galbreath (1953) and Webb (1969).

It was assigned to Cosorycinae by Frick (1937); to Antilocapridae by Leidy (1869), Skinner and Taylor (1967) and Tedford et al. (1987); and to Merycodontinae by Janis and Manning (1998).

Species

C. (Paracosoryx), C. (Subcosoryx), C. (Subparacosoryx), C. furcatus (syn. C. burgensis, C. (Paracosoryx) burgensis, C. agilis), C. ilfonsensis

Synonymy list

Year	Name and author
1869	Cosoryx Leidy
1937	Cosoryx Frick p. 291
1967	Cosoryx Skinner and Taylor
1987	Cosoryx Tedford et al.
1998	Cosoryx Janis and Manning p. 496

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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)
—	Pecora	()
family	Antilocapridae
subfamily	Merycodontinae	()
genus	Cosoryx	Leidy 1869

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. †Cosoryx Leidy 1869

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Subg. †Cosoryx (Paracosoryx) Frick 1937

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†Cosoryx (Paracosoryx) sabulonis Matthew and Cook 1909

†Cosoryx (Paracosoryx) wilsoni Frick 1937

Subg. †Cosoryx (Subcosoryx) Frick 1937

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†Cosoryx (Subcosoryx) cerroensis Frick 1937

Subg. †Cosoryx (Subparacosoryx) Frick 1937

†Cosoryx furcatus Leidy 1869

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†Cosoryx furcatus mooki Frick 1937

†Cosoryx furcatus stembergi Frick 1937

†Cosoryx furcatus sternbergi Frick 1937

Invalid names: Cosoryx (Paracosoryx) burgensis Frick 1937 [synonym], Cosoryx agilis Douglass 1899 [synonym], Cosoryx burgensis Frick 1937 [synonym]

†Cosoryx ilfonsensis Frick 1937

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialo

Locomotion:

actively mobilec

Life habit:

ground dwellingf

Diet:

grazerg

Reproduction:

viviparoussubc

Comments:

grazer based on premaxillary shape (Solounias and Moelleken 1993)g

Created:

2009-01-04 10:47:24

Modified:

2009-01-04 12:47:24

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

References: Lillegraven 1979, Nowak 1999, Solounias and Moelleken 1993, Hendy et al. 2009, Carroll 1988, Nowak 1991

Age range: base of the Barstovian to the top of the Hemphillian or 16.30000 to 4.90000 Ma

Collections (99 total)

Time interval	Ma	Country or state	Original ID and collection number
Miocene	23.03 - 5.333	USA (Montana)	C. sp. (18897)
Miocene	23.03 - 5.333	USA (Nebraska)	C. furcatus (18210 18238)
Miocene	23.03 - 5.333	USA (South Dakota)	Merycodus furcatus (18084 18085 18183 18380 18383 18384)
Miocene	23.03 - 5.333	USA (Kansas)	C. furcatus (18122)
Hemingfordian	20.43 - 15.97	USA (Nebraska)	C. wilsoni (17961)
Hemingfordian	20.43 - 15.97	USA (Nevada)	C. wilsoni (18962)
Hemingfordian	20.43 - 15.97	USA (Wyoming)	C. wilsoni (18873 19073 19075)
Barstovian	16.3 - 12.5	USA (Nebraska)	C. furcatus (18144) Merycodus furcatus (18443)
Barstovian	16.3 - 12.5	USA (Idaho)	C. sp. (19013)
Barstovian	16.3 - 12.5	USA (New Mexico)	C. sp. (19535)
Barstovian	16.3 - 12.5	USA (Nevada)	Merycodus furcatus (19088)
Early/Lower Barstovian	16.3 - 12.5	USA (Nebraska)	C. wilsoni (17905)
Early/Lower Barstovian	16.3 - 12.5	USA (New Mexico)	C. ilfonsensis (19547)
Barstovian - Clarendonian	16.3 - 9.4	USA (New Mexico)	C. ilfonsensis (19531)
Barstovian - Clarendonian	16.3 - 9.4	USA (Nebraska)	C. furcatus (18270) C. furcatus, C. burgensis (18077)
Clarendonian	12.5 - 9.4	USA (South Dakota)	Merycodus furcatus (18063 18470 18472 18473 18478 18481 18485 18492 18493) Merycodus sp. (18268)
Clarendonian	12.5 - 9.4	USA (California)	C. sp. (19517) Merycodus cerroensis (19145 19181 19182 19276 19277 19278 19353 19361 19453 19454 19455 19467 19486 19489 19490 19492 19494 19495 19496 19497 19499 19500 19501 19504 19507 19512 19515 19541 19553 19592 19593 19594)
Clarendonian	12.5 - 9.4	USA (Nebraska)	C. furcatus (18060 18078 18106 18157 18159 18176 18204 18217 18233 18234 18243 18260 18294 18334 18413 18414 18456) C. sp. (18177 18331) Merycodus furcatus (18082 18483)
Clarendonian	12.5 - 9.4	USA (Nevada)	Merycodus furcatus (19035 182562)
Early/Lower Clarendonian	12.5 - 9.4	USA (Nebraska)	C. sp. (18129)
Late/Upper Clarendonian	12.5 - 9.4	USA (New Mexico)	C. cerroensis (19528)
Clarendonian - Hemphillian	12.5 - 4.9	USA (South Dakota)	C. furcatus (18087)
Clarendonian - Hemphillian	12.5 - 4.9	USA (Washington)	C. cerroensis (175228)
Late/Upper Miocene	11.608 - 5.333	Japan	Dicrocerus furcatus (52009)
Late/Upper Hemphillian	10.3 - 4.9	Mexico (Zacatecas)	C. sp. (157349 157350)
Early/Lower Pliocene	5.333 - 3.6	USA (Oklahoma)	C. cerroensis (209142)