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Taxonomy
Nothokemas was named by White (1947). Its type is Oxydactylus floridanus.
It was assigned to Nothokemadidae by White (1947); to Alticamelinae by Maglio (1966); to Camelidae by Frailey (1978) and Honey et al. (1998); and to Nothokemadinae by Marriott et al. (2022).
It was assigned to Nothokemadidae by White (1947); to Alticamelinae by Maglio (1966); to Camelidae by Frailey (1978) and Honey et al. (1998); and to Nothokemadinae by Marriott et al. (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 1947 | Nothokemas White p. 508 figs. 5, 6 |
| 1966 | Nothokemas Maglio p. 3 |
| 1978 | Nothokemas Frailey p. 13 |
| 1998 | Nothokemas Honey et al. |
| 2022 | Nothokemas Marriott et al. p. 297 |
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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. †Nothokemas White 1947
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†Nothokemas hidalgensis Patton 1969
†Nothokemas waldropi Frailey 1978
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. E. White 1947 | A large hornless artiodactyl with unreduced nasals;
lacrymal vacuity as large as the orbit; rostrum high, narrow, and moderately elongate; postorbital bar complete; teeth slightly more hypso- dont than Syndyoceras; premolars and molars similar to those of Pro- toceras; internal crescents of the upper molars and the external cres- cents of the lower molars separate to the base of the tooth; mesostyle of the molars rudimentary; heel of third lower molar single lobed; orbit and internal nares posterior to third upper molar; cuboid and navicular probably separate. | |
| K. Marriott et al. 2022 | (modified from Honey et al., 1998, p. 447): Cl/cl caniniform, with Cl larger than 13; cl large and recurved. Pl�ith roots c_lo�e_ly appressed or fused; pl absent. Long cl-p2diastema. Pnmitive brachydont cheek teeth, as in Gentilicamelus.P2-4/p2-4 unreduced in primitive species, slightly reduced inmore derived species. P2 lingual cingulum smaller than themore prominent lingual cingulum of the P3, and p3-4 with adeeper antero_lingual fold.. Posterolingual cusp on p3, and onthe p2 larger m some species. Intercolumnar tubercles variablypresent on the molars, and V-shaped on upper molars. Ribs andstyles on the upper molars usually approximately 1/3 the size ofthe paracone o� met_acone, as in Gentilicamelus. Posterior edgeof m3 entocorud slightly overlaps the hypoconulid. Mandibledorsoventrally deep and thin (twice as deep as lower molarcrown heights), with an expanded mandibular angle (twicethe breadth as the ramus at its most extreme). Rostrum andmandibular symphysis ventrally deflected by 20° (measured bythe angle between the occlusal plane of the postcanine teeth andthe occlusal plane of the incisors). |