Paraphiomys shipmani

Antoñanzas, Raquel López, Sen, Sevket & Mein, Pierre, 2004, Systematics and phylogeny of the cane rats (Rodentia: Thryonomyidae), Zoological Journal of the Linnean Society 142, pp. 423-444: 429

publication ID

0024-4082

persistent identifier

http://treatment.plazi.org/id/D417CA60-F578-FF9D-645B-E15E912AFADF

treatment provided by

Diego

scientific name

Paraphiomys shipmani
status

 

PARAPHIOMYS SHIPMANI   DENYS ET JAEGER, 1992

This species ( Fig. 3I) was described and illustrated by Denys & Jaeger (1992: 77) based on five mandibular rami from the Middle Miocene of Fort Ternan, Kenya. The holotype (KNM FT 3305) is a right mandible with d4-m3. Unfortunately, no upper tooth of this taxon has been found to date. Paraphiomys shipmani   mainly differs from P. pigotti   , P. hopwoodi   , Paraphiomys   sp. nov. from Saudi Arabia, P. occidentalis   , Epiphiomys coryndoni   and Sacaresia moyaeponsi   in the absence of metalophulid II in the lower molars. It is distinct from Kochalia geespei   in its larger m3 without metaconid hook and with a very small hypoconulid ( Denys & Jaeger, 1992). Paraphiomys shipmani   is clearly smaller and less hypsodont than Neosciuromys africanus   and P. simonsi   . Despite the fact that it is morphologically very close to P. renelavocati   sp. nov. and to Apodecter stromeri   , it differs from these in size. One of the differences between P. shipmani   and P. orangeus   is the absence of anteroconid on the p4 of the former. Paraphiomys shipmani   is smaller than P. roessneri   and P. australis   , and it shows on the lower molars a prominent labial anteroconid, missing in the latter species. The basic morphology of the lower molars of P. shipmani   is similar to that of the lower molars of P. afarensis   . However, the former is smaller and it shows the hypolophid more posteriorly directed. Paraphiomys shipmani   differs from the two species of Paraulacodus   primarily in being smaller and having the hypolophid posteriorly directed. Additionally, it is distinct from Paraulacodus johanesi   in having a very low antero-external cingular cusp that is not connected to the protoconid.