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Dental development and life history in Anapithecus hernyaki

Lookup NU author(s): Dr Don Reid


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The sample of Anapithecus from Rudabánya, Hungary, is remarkable in preserving a large number of immature individuals. We used perikymata counts, measurements of root length and cuspal enamel thickness, and observations of the sequence of tooth germs that cross match specific developmental stages in Anapithecus to construct the first composite picture and time scale for dental development in a pliopithecoid (Catarrhini, Primates). We conclude that the age of eruption of M1 in Anapithecus was similar to various macaque species (∼1.45 months), but that M2 and M3 emergence were close to 2.2 and 3.2 years, respectively (both earlier than expected for similarly sized cercopithecoids). There may have been little difference in individual tooth formation times between cercopithecoids and Anapithecus, but the degree of molar overlap during M1, M2, and M3 crown development, which is extreme in Anapithecus, is fundamentally different. Overall dental development in Anapithecus was very rapid. Old World monkeys appear derived in lacking significant molar overlap, and hominoids may be derived in having longer tooth formation times, both resulting in longer overall dental development times. This is consistent with the general conclusion that the Pliopithecoidea is an outgroup to the Cercopithecoidea and the Hominoidea. On the other hand, rapid dental formation in Anapithecus may be an apomorphy indicative of an unusually rapid life history or unique pressures related to diet and maturation. Folivory and/or predation pressure may be responsible for generating selection to more rapidly erupt permanent teeth and possibly attain adult body masses in Anapithecus. Whatever the case, Anapithecus, with an M3 emergence of ∼3.2 years, is dramatically faster than any extant catarrhine of similar body mass. This represents yet another unusual attribute of this poorly known fossil catarrhine. © 2005 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Nargolwalla MC, Begun DR, Dean MC, Reid DJ, Kordos L

Publication type: Article

Publication status: Published

Journal: Journal of Human Evolution

Year: 2005

Volume: 49

Issue: 1

Pages: 99-121

Print publication date: 01/07/2005

ISSN (print): 0047-2484

ISSN (electronic): 1095-8606

Publisher: Academic Press


DOI: 10.1016/j.jhevol.2005.03.008

PubMed id: 15935440


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