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Vilevolodon
Taxonomy
Vilevolodon was named by Luo et al. (2017). Its type is Vilevolodon diplomylos.
It was assigned to Eleutherodontidae by Luo et al. (2017).
It was assigned to Eleutherodontidae by Luo et al. (2017).
Species
V. diplomylos (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2017 | Vilevolodon Luo et al. p. 326 figs. Figs. 1-2 |
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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 | |
|---|---|---|
| X.-Z. Luo et al. 2017 | Among haramiyidans, Vilevolodon is most similar to Arboroharamiya10 and Xianshou11 in having dual mortar–pestle molar occlusion in which the tallest distal cusp A1 of the upper molar (upper ‘pestle’) occludes into the distal basin (lower ‘mortar’) of the opposite
lower molar. The tallest mesial cusp A1 of the lower molar (lower pestle) occludes into the mesial basin (upper mortar) of the opposite upper molar (Figs 1, 2, Extended Data Figs 3–6; Supplementary Video 1). It differs from Maiopatagium15 and Shenshou11 in that upper molars are arranged in successively imbricated series in which M2 is oblique to M1, and M1 is oblique to P4. This is mirrored by imbrication of the lower teeth in which M2 is medial (and oblique) to M1, and M1 is medial to P4 (Fig. 1). This differs from the straight tooth rows of Maiopatagium and Shenshou (Fig. 2). Among eleutherodontids (see Supplementary Information), V. diplomylos is most similar to species of Xianshou in having a hypertrophied P4 and pronounced flexure of upper P3–P4 that is correlated with rostroventral bending of the maxilla. Differs from Xianshou species in having larger teeth but a shorter mandible. Differs from paulchoffatiid multituberculates16 in that its molars have a confluent root in a single alveolus, not double roots in separate alveoli. Differs from eutriconodonts and spalacotherioids of crown mammals in that Meckel’s sulcus is vestigial and Meckel’s element is shortened17,18. Full differential diagnosis of V. diplomylos from other mammaliaforms is provided in the Supplementary Information. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hopson 1973, Hendy et al. 2009, Luo et al. 2003 | |||||