Dental anomaly in Brachyodus from La Fuye, Early Miocene, France
| Stránky | 435–451 |
|---|---|
| DOI | 10.37520/fi.2024.031 |
| Klíčová slova | dental anomaly, teratogeny, molar, anthracothere, Artiodactyla, Early Miocene, France |
| Typ článku | Recenzovaný článek |
| Citace | PICKFORD, Martin. Dental anomaly in Brachyodus from La Fuye, Early Miocene, France. Fossil Imprint / Acta Musei Nationalis Pragae, Series B – Historia Naturalis. Praha: Národní muzeum, 2024, 80(2), 435–451. DOI: https://doi.org/10.37520/fi.2024.031. ISSN 2533-4050 (tisk), 2533-4069 (online). Dostupné také z: https://publikace.nm.cz/periodicke-publikace/fossil-imprint-acta-musei-nationalis-pragae-series-b-historia-naturalis/80-2/dental-anomaly-in-brachyodus-from-la-fuye-early-miocene-france |
Dental remains of the large anthracothere, Brachyodus, from the French Faluns (Touraine, Anjou) and the Sables de l’Orléanais, show a broad range of morphological variation, in particular in the degree of enamel wrinkling, the strength of enamel beading on crests and cingula, the form and volume of styles in the upper molars, and occasionally the addition of accessory cusps or cusplets, notably in the P4/. A third lower molar from La Fuye is highly unusual however, in possessing a greatly enlarged entoconid and posthypocristid which radically alter the appearance of the tooth. The specimen is described and compared with other third molars of Brachyodus. It possibly represents a case of teratogeny related to localised injury to, or alteration of, the odontoblast and ameloblast complexes. It is less likely to reflect inbreeding which is hypothesised to result in some cases of anomalous dental formation. Aspects of occlusion and life history of the individual from La Fuye are explored.
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