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Phiomia major
Taxonomy
Phiomia major was named by Sanders et al. (2004). Its type specimen is CH17−1, a set of teeth, and it is not a trace fossil. Its type locality is Chilga, which is in a Chattian fluvial lignite/siltstone in Ethiopia.
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Phiomia major Sanders et al. pp. 377-381 figs. 6-11 |
| 2010 | Phiomia major Sanders et al. p. 182 |
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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.
†Phiomia major Sanders et al. 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. Sanders et al. 2004 | Large species of Phiomia; molar size range surpasses dimensions of Fayum palaeomastodonts and symphysis and incisors much longer than in Palaeomastodon and other species of Phiomia (Table 3; Fig. 12); further distinguished from Palaeomastodon by absence of posttrite cristae (“zygodont crests”), presence of a central conelet in the posterior loph of P4, and by full trilophodonty of molars, including M3/m3. Differentiated from Miocene elephantoid taxa (for example, Hemimastodon, gomphotheres, mammutids) by smaller size of molars (Fig. 12), lack of features such as zygodont crests, crescentoids, and pretrite anterior and posterior accessory central conules throughout the crown, and trilophodont m3 with a diminutive posterior cingulid. Distinguished from Moeritherium by larger size, development of incisors into tusks, and trilophodont intermediate molars. |