0000000000676083
AUTHOR
Martin Pickford
Miocene fossil cercopithecoids from Kenya
Fossil cercopithecoid material from Ngeringerowa, Ngorora, and Nakali, dated at between 8.5 and 10.5 m.y., is described. The specimens are the only cercopithecoid remains dated between 15 and 6 m.y. from sub-Saharan Africa. The mandible of asmall colobine from Ngeringerowa (similar in size to Colobus verus) is assigned to a new genus and species, Microcolobus tugenensis. Unlike other colobine genera, the symphysis of Microcolobus lacks an inferior transverse torus. A colobine lower M1 or 2 from Nakali is longer and narrower than molars of M. tugenensis, indicating that it may belong to a distinct taxon. A P4 from Ngorora cannot be assigned confidently to subfamily, due to its unique metacon…
Un nuevo suido con dientes yugales tubulidentados e hipselorrizos del Mioceno inferior de Córcoles, España
[EN] Excavations at Córcoles, Guadalajara, Spain (MN 4) in October 1987, yielded a mandible and several isolated teeth of a strange suiform with tubulidentate cheek teeth, initially interpreted to be the remains of Tubulidentata. The specimens are complete enough to remove any doubt about which Order (Artiodactyla) and Superfamily (Suoidea) they belong to. They are here attributed to the Family Doliochoeridae, being related to the genera Bransatochoerus (MP 30) and Lorancahyus (MN 2) both of which have hypsorhizic cheek teeth, the latter with tubules in the teeth, but not to the fully-expressed extent seen in the fossils from Córcoles and the molars retain a distinct and large pulp cavity, …
On the status of Mabokopithecus clarki
The discovery of a second specimen of Mabokopithecus clarki at Maboko, Western Kenya, has allowed the reassessment of this enigmatic genus and species. The new specimen, unlike the holotype is complete and undamaged, which dispels the uncertainty about the morphology of the distal part of the tooth, a fact that has always hindered proper assessment of the holotype. It is suggested that the two teeth now assigned to the taxon are teratogenic lower molars of Kenyapithecus africanus . The record of the family Oreopithecidae at Maboko based on Mabokopithecus can now be deleted; only to be replaced by abundant records of a new genus of Oreopithecidae quite different in morphology from Mabokopith…