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Taxonomy
Miotylopus wilsoni was named by Dalquest and Mooser (1974). Its type specimen is TMM 41536-41, a mandible (both mandibles with teeth), and it is a 3D body fossil. Its type locality is Zoyatal, which is in a Miocene terrestrial horizon in Mexico. It is the type species of Aguascalientia.
It was recombined as Aguascalientia wilsoni by Stevens (1977), Honey et al. (1998) and Prothero et al. (2023).
It was recombined as Aguascalientia wilsoni by Stevens (1977), Honey et al. (1998) and Prothero et al. (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Miotylopus wilsoni Dalquest and Mooser |
| 1977 | Aguascalientia wilsoni Stevens p. 52 figs. 16A - E |
| 1998 | Aguascalientia wilsoni Honey et al. |
| 2023 | Aguascalientia wilsoni Prothero et al. p. 541 figs. Fig. 8 |
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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.
†Aguascalientia wilsoni Dalquest and Mooser 1974
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. R. Prothero et al. 2023 | (modified from Rincon et al. 2012, p. 459): Differs from all other species of Aguascalientia in having a smaller p1 than c1, prominent, bulbous, and strongly lingually inflected paraconids on lower premolars, shorter lower premolars relative to the molars, p2 distinctly smaller than p3, and less developed to absent styles and ribs on the lower molars. Differs from A. panamaensis in having a shallower invagination on the talonid of m3, having shallower fossettids on lower molars, and lacking a small fossettid between the metaconid and hypoconid on p3. Differs from A. minuta in being greater in size (similar to A. panamaensis), having a shallower invagination on the talonid of m3, and lacking an enamel fold on the anterior fossettid of m2. Discussion: As explained above, this taxon was originally and incorrectly attributed to Miotylopus by Dalquest and Mooser (1974), but Stevens (1977) demonstrated that it had characters of primitive floridatragulines, such as the intercolumnar tubercles, and transferred it to that group. As she pointed out, these specimens are just slightly younger or partially overlapping in time with the most primitive species of Floridatragulus, which suggested to Stevens (1977) that Aguascalientia wilsoni was ancestral to Floridatragulus. Honey et al. (1998) interpreted Aguascalientia as the sister-taxon to Floridatragulus, and this was confirmed by Rincon et al. (2012). |