PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Bathyopsis

Mammalia - Dinocerata - Uintatheriidae

Taxonomy

Bathyopsis was named by Cope (1881). Its type is Bathyopsis fissidens.

It was assigned to Dinocerata by Cope (1881); to Bathyopsidae by Hay (1902); to Uintatheriidae by Dorr (1958); to Bathyopsinae by Wheeler (1961); to Bathyopsini by Schoch and Lucas (1985); and to Uintatheriinae by Lucas and Schoch (1998).

Species

B. fissidens (type species), B. middleswarti

Synonymy list

Year	Name and author
1881	Bathyopsis Cope p. 194
1902	Bathyopsis Hay p. 700
1958	Bathyopsis Dorr, Jr. p. 515
1961	Bathyopsis Wheeler pp. 23 - 24
1985	Bathyopsis Schoch and Lucas p. 43
1998	Bathyopsis Lucas and Schoch p. 287

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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

Rank	Name	Author
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Uintatheriamorpha
order	Dinocerata
family	Uintatheriidae	Flower 1876
subfamily	Uintatheriinae	Flower 1876
genus	Bathyopsis

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. †Bathyopsis Cope 1881

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†Bathyopsis fissidens Cope 1881

†Bathyopsis middleswarti Wheeler 1961

Diagnosis

Reference	Diagnosis
W. H. Wheeler 1961	Small to medium-sized uintathere. Trigonids high, small P, present. Metastylid strong and closely appressed to trigonid. Entoconid not notably distinct. No hypoconulid crest. Paraconid crest much reduced. Jaws very deep with strong inframandibular process sloping evenly backward and upward to the angle. Lower molars not as elongate as in Probathyopsis. Cranial table only slightly basined, horns rudimentary. Skull not deep. Temporal fossa visible from above. No sagittal crest.
R. M. Schoch and S. G. Lucas 1985	Same as that for the Bathyopsini. Relatively small uintatheriines with small horns and a vestigial P/1 pre sent (variable?) (p).]