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Yuneomys
Taxonomy
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2017 | Yuneomys Qiu p. 98 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Z. Qiu 2017 | "The new genus Yuneomys is characterized by its small size and bunodont cheek teeth, and is closely similar to the genus Leptodontomys Shotwell, 1956 and to Eomyops Engesser, 1979 in size and morphology. It is easily distinguished from all eomyids with lophodonty by the bunodont tooth pattern, and differs from most bunodont forms in relatively small dimensions. Main differences of the new genus from those taxa with bunodont teeth are as follows.
Yuneomys differs from Eomys Schlosser, 1884 in having more lingual extension of the IIs and IVs in M1 and M2, less buccal extension of the IIIsd in m1 and m2, and its anteriorly directed hypolophid joining the hypoconid or the anterior arm of hypoconid in p4–m2. Yuneomys differs from North American Leptodontomys Shotwell, 1956 and European Eomyops Engesser, 1979 in having poorly developed lingual anteroloph in M1 and M2 and narrower anterolophid and posterolophid in m1 and m2, and in the hypolophid being anteriorly directed and buccally connected with the hypoconid or the anterior arm of hypoconid in p4–m2. Yuneomys differs from Pentabuneomys Engesser, 1990 in smaller size, narrower lingual anteroloph in M1 and M2 and narrower anterolophid and posterolophid in m1 and m2, more lingual extension of Is and IVs in M1 and M2, and in the hypolophid being anteriorly directed and buccally connected with the hypoconid or the anterior arm of hypoconid in p4–m2. Yuneomys differs from Plesieomys Qiu, 2006 in smaller size, having relatively distinct lingual anteroloph, lacking an enlarged end of mesoloph in M1 and M2, and having relatively complete hypolophid in p4–m2. Yuneomys differs from Heteroeomys Qiu, 2006 in smaller size, having a weak lingual anteroloph and more lingual extension of Is and IVs in M1 and M2, and a relatively complete, anteriorly directed hypolophid in p4–m2. Yuneomys differs from Pseudadjidaumo Lindsay, 1972 in having a weaker development of lingual anteroloph in M1 and M2, and the transverse loph(id)s directed more perpendicular to the longitudinal axis in molars. Yuneomys differs from Ronquillomys Jacobs, 1977 in smaller size, having a deeper Is in M1 and M2, more distinct anterolophid and broader IVsd in m1 and m2, and the entoloph situated more lingually in M1 and M2, and ectolophid more buccally in m1 and m2. Yuneomys differs from Kansasimys Wood, 1936 in smaller size, having a developed anterolophid and an anteriorly directed hypolophid in m1 and m2." |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1999, Carroll 1988, Hendy et al. 2009, Ji et al. 2002, Lillegraven 1979 | |||||
Age range: Late/Upper Miocene or 11.63000 to 5.33300 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Miocene | China (Yunnan) | Leptodontomys pusillus (235536) |