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Tapirus rondoniensis
Taxonomy
Tapirus rondoniensis was named by Holanda et al. (2011). Its type specimen is UNIR-PLV-M009, a skull, and it is a 3D body fossil. Its type locality is Araras/Periquitos, which is in a Pleistocene/Holocene fluvial sandstone in the Rio Madeira Formation of Brazil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Tapirus rondoniensis Holanda et al. p. 113 figs. Figs. 2A–C |
| 2013 | Tapirus rondoniensis Holanda and Ferrero |
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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.
†Tapirus rondoniensis Holanda et al. 2011
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. C. Holanda et al. 2011 | Tapirus rondoniensis differs from extant and fossil species in having external frontal crests that meet very close to the frontoparietal suture to form a true sagittal crest restricted to the parietals. The frontals present a relatively broad dorsal table. The skull possesses a narrow and deep supraorbital groove for the meatal diverticulum; a very weakly developed fossa for the meatal diverticulum on the dorsal table of the frontal; a shallow fossa, with no distinct margins, for the meatal diverticulum on the posterior surface of the nasal; a wide maxillary bar between the infraorbital foramen and lacrimal bone; a slender and pointed posterior process of the lacrimal; and strongly swollen frontals. In addition, the nasal process of the frontal extends between the nasals; the lambdoidal crest is projected to the level of the occipital condyles; the frontonasal process of maxilla forms the floor of a trough for the meatal diverticulum; and the anteromedial process of the maxilla is covered by the premaxilla. The dentition includes a weakly molarized P2, with a reduced protocone without a protoloph, and the metaloph reaches only the base of the ectoloph. |
Measurements
No measurements are available
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| Source: g = genus, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Ji et al. 2002, MacFadden and Cerling 1996 | |||||
Age range: base of the Late/Upper Pleistocene to the top of the Holocene or 0.12900 to 0.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Pleistocene - Holocene | Brazil (Rondonia) | Tapirus rondoniensis (type locality: 197104) |