Mimolagus aurorae Fostowicz-Frelik, Li, Mao, Meng, and Wang, 2015
|
publication ID |
https://doi.org/ 10.4202/app.00292.2016 |
|
persistent identifier |
https://treatment.plazi.org/id/03E687D4-FFF5-FFCC-FF1C-7E0BFE882559 |
|
treatment provided by |
Felipe |
|
scientific name |
Mimolagus aurorae Fostowicz-Frelik, Li, Mao, Meng, and Wang, 2015 |
| status |
|
Mimolagus aurorae Fostowicz-Frelik, Li, Mao, Meng, and Wang, 2015
Fig. 2B View Fig .
Material.—Right m1 (IVPP V20826) from Wulanhuxiu, Erlian Basin, Nei Mongol, China, horizon 4 (lower part), Irdinmanhan (middle Eocene).
Description.—The tooth is strongly worn, and the trigonid and talonid form a continuous square, gently concave occlusal surface ( Fig. 2 View Fig ). The protoconid is aligned with both the metaconid and the hypoconid, while the entoconid protrudes slightly lingually. The metaconid is the highest cusp. The enamel layer maintains a uniform thickness around the entire perimeter of the crown. Because of the heavy wear, the tooth crown is not very high, and the difference in crown height between the buccal and lingual sides of the tooth is not very pronounced. The mesial and distal roots are complete, robust and relatively divergent. Each root has a small apical aperture. The tooth closely resembles other specimens of Mimolagus aurorae from the eastern part of the Erlian Basin ( Fostowicz-Frelik et al. 2015b). Such strong crown wear, leaving a gently concave and obliterated occlusal surface, is characteristic of this species, and was probably achieved relatively early in ontogeny (similar wear can be seen in two of three lower teeth found in the Huheboerhe area; Fostowicz-Frelik et al. 2015b: fig. 5).
Stratigraphic and geographic range.—Irdin Manha Formation, Irdinmanhan, middle Eocene, Erlian Basin, Nei Mongol, China.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.