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Taxonomy
Butomys prima was named by Dashzeveg and Meng (1998). Its type specimen is PSS 39/19, a mandible (a fragment of a right lower jaw with p4-m2 (fig.4)), and it is a 3D body fossil. It is the type species of Butomys.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1998 | Butomys prima Dashzeveg and Meng pp. 5 - 6 fig. 4 |
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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.
†Butomys prima Dashzeveg and Meng 1998
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Dashzeveg and J. Meng 1998 | Small ctenodactyloid; lower molars brachyodont and mainly bunodont, with weak lophs; p4 non-molariform with a heel bearing a conical entoconid and a low transverse ridge; ml-2 ectolophid rudimentary and mesoconid absent; hypoconulid large; masseteric fossa extending below the anterior edge of ml. Differs from Yuomyidae (including Hohomys [Hu, 1995]) and Chapattimyidae in having a non-molariform p4. Differs from Cocomyidae and Tamquammyidae in having p4 transversely wider and protoconid larger than metaconid, lower molars with weak ectolophid, absence of mesoconid, and larger and isolated hypoconulid. Differs from Ctenodactylidae in being more cuspate. Differs from Mergenomys in being smaller, having less developed metalophid II and ectolophid, and hypolophid extending toward the hypoconid. |