The false potto (Pseudopotto martini) is a lorisoid primate of uncertain taxonomic status found in Africa.
Anthropologist Jeffrey H. Schwartz named it in 1996 as the only species of the genus Pseudopotto on the basis of two specimens (consisting only of skeletal material) that had previously been identified as a potto (Perodicticus).
The false potto generally resembles a small potto, but according to Schwartz it differs in having a longer tail, shorter spines on its neck and chest vertebrae, a smaller, less complex spine on the second neck vertebra, an entepicondylar foramen (an opening in the humerus, or upper arm bone), a lacrimal fossa (a depression in the skull) that is located inside the eye socket, a smaller upper third premolar and molar, and higher-crowned cheekteeth, among other traits.
[3] The exact provenance of the two specimens is unknown, and one is represented by a complete skeleton (but no skin) and the other by a skull only.
[12] Opinions since then have been divided: a 2003 compilation of African primate diversity concluded that there was insufficient evidence that the false potto is a distinct species,[13] the primate chapter of the 2005 third edition of Mammal Species of the World, written by Groves, listed Pseudopotto as a genus but noted that it was "controversial";[14] and Schwartz continued to recognize the false potto as a genus in 2005.
According to Schwartz, the skeleton shows signs of osteoporosis and periodontitis (common in zoo animals), but not of other pathologies or abnormalities.
[2] The other specimen, AMZ-AS 1730, is a subadult male collected in the wild, of which only the skull, including the mandible (lower jaw), was preserved.
[4] Specimens of Pseudopotto are at least superficially similar to pottos,[17] but according to Schwartz, they differ in a number of traits.
[9] Another alleged diagnostic feature is the presence of an entepicondylar foramen (an opening near the distal, or far, end of the bone) on the humerus (upper arm bone);[26] however, Sarmiento found this feature in 4 out of 11 specimens, and on one side of a fifth,[25] and Stump noted that the foramen occurred in specimens from across the potto's range.
Sarmiento notes, however, that captive specimens may develop abnormalities in the teeth and that some dental characters Schwartz uses are quite variable, sometimes even from one side of the same individual to another.
[29] According to records in the Anthropological Institute and Museum, AMZ 6698, the holotype, is from "Equatorial Africa", and AMZ-AS 1730 is from the "Cameroons".