Parapithecus is an extinct genus of primate that lived during the Late Eocene-Earliest Oligocene in what is now Egypt. Its members are considered to be basal anthropoids and the genus is closely related to Apidium. There are two known species. They lived about 40 to 33 million years ago.
Parapithecus had an unusual dentition, which contained no adult lower incisors. The upper dentition likely had four incisors. This means the adult dental formula can be expressed as: Incisors: 2/0; Canines: 1/1; Premolars: 3/3; Molars: 3/3.
Bibliography
References
Beard CK (2002). "Basal anthropoids". In Hartwig, Walter (ed.). The Primate Fossil Record. Cambridge University Press. pp. 133–149. ISBN 978-0-521-08141-2. 978-0-521-08141-2 ↩
Simons EL (1986-03-01). "Parapithecus grangeri of the African Oligocene: an archaic catarrhine without lower incisors". Journal of Human Evolution. 15 (3): 205–213. Bibcode:1986JHumE..15..205S. doi:10.1016/S0047-2484(86)80046-X. ISSN 0047-2484. /wiki/Bibcode_(identifier) ↩
Simons EL (July 2001). "The cranium of Parapithecus grangeri, an Egyptian Oligocene anthropoidean primate". Proceedings of the National Academy of Sciences of the United States of America. 98 (14): 7892–7897. Bibcode:2001PNAS...98.7892S. doi:10.1073/pnas.051003398. PMC 35439. PMID 11438736. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC35439 ↩