A supernumerary tooth in a 1.7 million-year-old Australopithecus robustus from Swartkrans, South Africa
| Autor: | Thackeray Jf, Ugo Ripamonti, Petit Jc |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
geography
Paleodontology geography.geographical_feature_category biology Hominidae business.industry Dentistry Anatomy biology.organism_classification stomatognathic diseases Dental arch medicine.anatomical_structure stomatognathic system Cave Incisor Australopithecus Maxilla medicine Supernumerary business General Dentistry |
| Zdroj: | European Journal of Oral Sciences. 107:317-321 |
| ISSN: | 0909-8836 |
| DOI: | 10.1046/j.0909-8836.1999.eos107501.x |
| Popis: | The maxillary dental arch of a partial cranium of an adult specimen of Australopithecus robustus shows the presence of a supernumerary tooth between the right first and second incisors. The fossil specimen, SK 83, is from Swartkrans Member 1 sediments, considered, on the basis of associated fauna, to be approximately 1.7 million yr old. The specimen was analyzed macroscopically, stereomacroscopically and by X-ray computed tomography. The anatomic position and the morphology of the tooth are consistent with a diagnosis of supernumerary lateral incisor rather than a mesiodens or a retained deciduous tooth. This is the first description of a supernumerary tooth found in Plio-Pleistocene hominid fossils from South African cave deposits. |
| Databáze: | OpenAIRE |
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