First occurrence of the enigmatic peccariesMylohyus elmoreiandProsthennops serusfrom the Appalachians: latest Hemphillian to Early Blancan of Gray Fossil Site, Tennessee
| Autor: | Blaine W. Schubert, Steven C. Wallace, Evan M. Doughty, Lauren M. Lyon |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
010506 paleontology Fauna Species distribution lcsh:Medicine Tayassuinae 010603 evolutionary biology 01 natural sciences General Biochemistry Genetics and Molecular Biology Intraspecific competition Gray Fossil Site Appalachian Region Biochronology Latest Hemphillian Early blancan Artiodactyla 0105 earth and related environmental sciences biology Ecology General Neuroscience lcsh:R Niche differentiation Tayassudiae General Medicine biology.organism_classification Geography General Agricultural and Biological Sciences Mylohyus |
| Zdroj: | PeerJ, Vol 6, p e5926 (2018) |
| ISSN: | 2167-8359 |
| DOI: | 10.7717/peerj.5926 |
| Popis: | Two peccary species,Mylohyus elmoreiandProsthennops serusare described from the medium-bodied fauna of the Gray Fossil Site (GFS) of northeastern Tennessee. This site, recognized as an oak-hickory forest, is latest Hemphillian or earliest Blancan based on mammalian biochronology, with an estimated age of 4.9–4.5 Ma. The GFS represents the only site outside the Palmetto Fauna of Florida withM. elmorei, greatly expanding the species range north over 920 km, well into the Appalachian region. This is also the first Appalachian occurrence of the relatively widespreadP. serus. Our understanding of intraspecific variation for bothM.elmoreiandP.serusis expanded due to morphological and proportional differences found in cranial and dental material from the GFS, Tyner Farm locality, Palmetto Fauna, and within the literature. The GFSM. elmoreimaterial represents the most complete mandible and second cranium for the species, and preserve intraspecific variation in the length of the diastema, dental proportions, and the complexity of the cuspules of the hypoconulid complex. Similarly, mandibular material from the GFS forP. serusexhibited larger dentitions and a greater degree of robustness than currently recognized for the species. |
| Databáze: | OpenAIRE |
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