Eomakhaira molossus, Engelman, Flynn, Wyss & Croft, 2020

Suarez, Catalina, Forasiepi, Analia M., Babot, María Judith, Shinmura, Tatsuya, Luque, Javier, Vanegas, Rubén D., Cadena, Edwin A. & Goin, Francisco J., 2023, A sabre-tooth predator from the Neotropics: Cranial morphology of Anachlysictis gracilis Goin, 1997 (Metatheria, Thylacosmilidae), based on new specimens from La Venta (Middle Miocene, Colombia), Geodiversitas 45 (18), pp. 497-572 : 547-548

Eomakhaira molossus

Character 33: coded 2 (posterior end of palate straight posteriorly), following descriptions of Engelman et al. (2020) and figures, the posterior border is clearly straight.

Character 171: coded 1 (large canines). The upper canines are large, robust and not sabre-like.

Character 176: changed from 0 to “?”. The preservation does not allow to affirm that the exposed surfaces (labial) of the canines are smooth or with small grooves and ridges. The lingual surfaces are not exposed because the jaw is occluded. They are only visible in the CT scans shown byEngelman et al. (2020). However, the images do not allow to identity clearly if the lingual surface is smooth or not, although it is possible to identify the prominent sulci. Observing the photographs of the labial face of the canine and the CT images (Engelman et al. 2020: fig. 10), there are distinct rugosities visible close to the alveolar border in both, lingual and labial faces, and on the lingual face at the level of the tooth row. However, due to the preservation condition, we cannot define whether these rugosities correspond to the “longitudinal small grooves and ridges” present in sparassodonts or are caused by external factors.

APPENDIX 1. — Continuation.

Character 177: changed to 2 (prominent median sulci present only on lingual faces of the canines) following descriptions and figures in Engelman et al. (2020), as this structure is absent in labial faces, except for a shallow sulcus observable only in the CT scans, but it is not prominent.