Le Cabec, A;
Dean, MC;
Begun, DR;
(2017)
Dental development and age at death of the holotype of Anapithecus hernyaki (RUD 9) using synchrotron virtual histology.
Journal of Human Evolution
, 108
pp. 161-175.
10.1016/j.jhevol.2017.03.007.
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Abstract
The chronology of dental development and life history of primitive catarrhines provides a crucial comparative framework for understanding the evolution of hominoids and Old World monkeys. Among the extinct groups of catarrhines are the pliopithecoids, with no known descendants. Anapithecus hernyaki is a medium-size stem catarrhine known from Austria, Hungary and Germany around 10 Ma, and represents a terminal lineage of a clade predating the divergence of hominoids and cercopithecoids, probably more than 30 Ma. In a previous study, Anapithecus was characterized as having fast dental development. Here, we used non-destructive propagation phase contrast synchrotron micro-tomography to image several dental microstructural features in the mixed mandibular dentition of RUD 9, the holotype of A. hernyaki. We estimate its age at death to be 1.9 years and describe the pattern, sequence and timing of tooth mineralization. Our results do not support any simplistic correlation between body mass and striae periodicity, since RUD 9 has a 3-day periodicity, which was previously thought unlikely based on body mass estimates in Anapithecus. We demonstrate that the teeth in RUD 9 grew even faster and initiated even earlier in development than suggested previously. Permanent first molars and the canine initiated 49 and 38 days prenatally, respectively. These results contribute to a better understanding of dental development in Anapithecus and may provide a window into the dental development of the last common ancestor of hominoids and cercopithecoids.
| Type: | Article |
|---|---|
| Title: | Dental development and age at death of the holotype of Anapithecus hernyaki (RUD 9) using synchrotron virtual histology |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jhevol.2017.03.007 |
| Publisher version: | http://doi.org/10.1016/j.jhevol.2017.03.007 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Life Sciences & Biomedicine, Anthropology, Evolutionary Biology, Late Miocene, Stem catarrhine, Eruption pattern, Cuspal daily secretion rate, Virtual anthropology, Life history, CHIMPANZEES PAN-TROGLODYTES, LIFE-HISTORY VARIATION, ERUPTION SEQUENCES, TOOTH DEVELOPMENT, MALAGASY LEMURS, PERMANENT TEETH, FOSSIL RECORD, MODERN HUMANS, BODY-SIZE, PRIMATES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1560907 |
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