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Dental Anomalies in the Mandible of Capra pyrenaica: Presence of Two Permanent Fourth Premolars in a Pleistocene Wild Goat from Arlanpe Cave (Bizkaia, Northern Spain)
Author(s) -
GómezOlivencia Asier,
Arceredillo Diego,
RiosGaraizar Joseba,
Garate Diego,
Iriarte Eneko,
Pedro Ziortza San
Publication year - 2011
Publication title -
international journal of osteoarchaeology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 60
eISSN - 1099-1212
pISSN - 1047-482X
DOI - 10.1002/oa.1295
Subject(s) - premolar , cave , mandible (arthropod mouthpart) , hypodontia , molar , tribe , dental anomalies , early pleistocene , pleistocene , geography , orthodontics , archaeology , dentistry , biology , medicine , zoology , genus , sociology , anthropology
In this study, we report a case of duplication of a lower fourth premolar (P 4 ) on an Iberian wild goat from the archaeological site cave of Arlanpe, (Lemoa, Bizkaia, Northern Spain). The preserved right mandible corpus displays two premolars and the first molar (M 1 ). Both premolars conform in size and general shape to fourth premolars (P 4 ) but the medialmost of the two is rotated 90° counterclockwise, and thus, its wear pattern is different. The comparative analysis to other bovids and the relative scarcity of this anomaly compared to other cases of polydontia and hypodontia suggest that it is a developmental defect consisting in the duplication of the tooth germ, and we doubt on the potential of this abnormality as a territorially based indicator of past wild populations as has been previously proposed. Copyright © 2011 John Wiley & Sons, Ltd.