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Nanolestes
Taxonomy
Nanolestes was named by Martin (2002). Its type is Nanolestes drescherae.
It was assigned to Zatheria by Martin (2002), Kielan-Jaworowska et al. (2004), Lopatin and Averianov (2006), Martin et al. (2010).
It was assigned to Zatheria by Martin (2002), Kielan-Jaworowska et al. (2004), Lopatin and Averianov (2006), Martin et al. (2010).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Nanolestes Martin p. 333 |
| 2004 | Nanolestes Kielan-Jaworowska et al. pp. 380, 399 fig. 10.13C |
| 2006 | Nanolestes Lopatin and Averianov |
| 2010 | Nanolestes Martin et al. p. 314 |
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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.
G. †Nanolestes Martin 2002
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†Nanolestes drescherae Martin 2002
†Nanolestes krusati Martin 2002
†Nanolestes mackennai Martin et al. 2010
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. Martin 2002 | Plesiomorphic stem-lineage representative of Zatheria with enlarged but basinless talonid on the double-rooted lower molars. Trigonid comparatively short (angle 500), proto-, para-, and metaconid slender and acute. Metaconid in line with the protoconid, not shifted posteriorly. The talonid consists of a main cusp (hypoconid) and a small additional cuspule on the cristid obliqua. No cusps or crests are developed lingual to the cristid obliqua. Last premolar (p5) not molarized. Dentary very slender with well developed angular process and Meckel's groove extending below m2 anteriorly. Mandibular foramen at an anterior position near the origin of the coronoid process. Tooth formula I?/4, C?/1, P?/5, M?/5. Upper molars with three roots and trigon basin ["trigon" is here used to mean the "primary trigon" (Patterson, 1956) of pretribosphenic mammals] flat without any crest or bulge. Stylocone Stylocone comparatively large and paracrista and metacrista separated into cusps and cuspules. Large cusp "C" between metacone and double-cusped metastyle. Additional cusp with two tips at the anterior border of the trigon near the base of the paracone. Trigon angle 650. | |
| T. Martin et al. 2010 | The original generic diagnosis of Nanolestes (Martin 2002, p. 333) is amended here after reinterpretation of Gui Mam 1005 (Martin 2002, fig. 4A–C) as m1, and not as a deciduous premolar as interpreted by Lopatin and Averianov (2006): Trigonid comparatively short (angle 50°) and metaconid inline with protoconid, not shifted posteriorly in molars distal to m1. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Luo et al. 2003, Hopson 1973, Hendy et al. 2009, Carroll 1988 | |||||
Age range: Late/Upper Kimmeridgian or 152.21000 to 149.20000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian - Kimmeridgian | China (Xinjiang) | N. mackennai (47056) | |
| Kimmeridgian | Portugal (Centro) | N. drescherae (24563) | |
| Late/Upper Kimmeridgian | Portugal (Centro) | Pantotheria indet. (69708) |