PBDB Taxon

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

Eotylopus

Mammalia - Oromerycidae

Taxonomy

Eotylopus was named by Matthew (1910).

It was assigned to Leptotragulinae by Matthew (1910); to Camelidae by Scott (1940); to Poebrotheriinae by Simpson (1945); and to Oromerycidae by Golz (1976), Carroll (1988), Prothero (1998).

Species

E. reedi

Synonymy list

Year	Name and author
1910	Eotylopus Matthew p. 36 figs. 1 - 5
1940	Eotylopus Scott p. 604
1945	Eotylopus Simpson p. 150
1976	Eotylopus Golz
1988	Eotylopus Carroll
1998	Eotylopus Prothero p. 428

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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	()

Rank	Name	Author
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
—	Artiodactylamorpha
—	Artiodactyla	()
suborder	Tylopoda	()
family	Oromerycidae
genus	Eotylopus

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. †Eotylopus Matthew 1910

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†Eotylopus reedi Matthew 1910

Diagnosis

Reference	Diagnosis
W. D. Matthew 1910	Dentition unreduced, teeth continuous without diastemata. Canines slightly larger than adjoining teeth. Anterior premolars simple, compressed, p3 with inner cusp, p4 with inner crescent, moderately wide transversely. Molars brachyodont, rather wide transversely, the outer crescents with prominent external ribs and mesostyle, weak para- and metastyles, the anterior inner crescent bifid posteriorly, one crest extending posteriorly, the other externally from the top of the crescent. Skull of moderate length, no lachrymal vacuity nor fossa, orbits nearly closed behind, bulla of camelid type, folded upon itself and filled with cancellous tissue as in Poebrotherium.

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialo

Locomotion:

actively mobilec

Life habit:

ground dwellingf

Diet:

browserf

Reproduction:

viviparoussubc

Created:

2005-08-31 14:38:30

Modified:

2005-08-31 16:38:30

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

References: Hendy et al. 2009, Prothero 1998, Carroll 1988, Nowak 1999, Lillegraven 1979

Age range: base of the Duchesnean to the top of the Chadronian or 39.70000 to 33.90000 Ma

Collections (15 total)

Time interval	Ma	Country or state	Original ID and collection number
Duchesnean	39.7 - 37.0	USA (Texas)	E. reedi (16835 16849)
Duchesnean	39.7 - 37.0	USA (California)	E. sp. (16810)
Chadronian	37.0 - 33.9	USA (Wyoming)	E. reedi (16898 16960 16961 16962 16963 16964 16965)
Chadronian	37.0 - 33.9	USA (Nebraska)	E. reedi (17031)
Chadronian	37.0 - 33.9	USA (Colorado)	E. sp. (16977)
Chadronian	37.0 - 33.9	Canada (Saskatchewan)	E. reedi (16919)
Chadronian	37.0 - 33.9	USA (Texas)	E. reedi (16931 17016)