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Nidimys occultus
Taxonomy
Nidimys occultus was named by Hunter et al. (2010). Its type specimen is MOR 2501, a mandible (L & R dentaries with I, p3, p4, m1), and it is a 3D body fossil. Its type locality is Shell Hell (MOR Loc. 703), which is in an Edmontonian fluvial mudstone in the St. Mary River Formation of Montana. It is the type species of Nidimys.
Synonymy list
| Year | Name and author |
|---|---|
| 2010 | Nidimys occultus Hunter et al. p. 890 fig. 6 |
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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.
†Nidimys occultus Hunter et al. 2010
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. P. Hunter et al. 2010 | Moderately large neoplagiaulacid multituberculate, that is, slightly larger than Mesodma thomsoni Clemens, 1964, approximately the size of the cimolodontid Cimolodon nitidus Marsh, 1889, and smaller than the cimolomyid Meniscoessus robustus (Marsh, 1889); differs from Mesodma in its higher mesial end of the serrate crest of p4 and smooth, as opposed to angled, transition between the mesial and apical edges of p4; differs from neoplagiaulacids other than Mesodma in lower first serration of p4 and lower cusp formula of m1 (6:4) with conical cusps, well separated from other cusps in the same row. |
Measurements
No measurements are available
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| Source: f = family, subo = suborder, c = class, subp = subphylum | |||||
| References: Gunnell et al. 1995, Krause 1982, Hendy et al. 2009, Hopson 1973, Carroll 1988 | |||||
Age range: Edmontonian or 72.20000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Edmontonian | USA (Montana) | Nidimys occultus (type locality: 96603) |