Eozygodon
Eozygodon Temporal range:Early Miocene
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Occlusal view of the third lower molar (m3) ofE. morotoensis | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Proboscidea |
Family: | †Mammutidae |
Genus: | †Eozygodon Tassy & Pickford, 1983 |
Species: | †E. morotoensis
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Binomial name | |
†Eozygodon morotoensis Tassy & Pickford, 1983
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Eozygodonis an extinct genus ofproboscideanin the familyMammutidaethat is based on a single species,E. morotoensis,named in 1983.[1]It is known from theEarly Mioceneof Africa (Kenya, Uganda, Namibia)[2]and well as possibly the Middle Miocene of China.[3]It is considered a primitive member of the family, retaining a long lower jaw (longirostrine) with lower tusks.[3][4]The upper tusks are small, and are parallel to each other. The skull of the young adult (around 24-26 years old in African elephant tooth wear equivalent years) AM 02 from Auchas, Namibia, was around the size of that of a 10 year oldAmerican mastodon,[5]around 60 centimetres (2.0 ft) in maximum length.[6]Dentalmesowearfrom East African specimens suggests abrowsingdiet.[7]Some authors suggest thatEozygodoncould be less closely related to other members of Mammutidae than other mammutids are toElephantida,making Mammutidae as typically definedparaphyletic.[5]
References
[edit]- ^Tassy, P. and Pickford, M. (1983). Un nouveau mastodonte zygolophodonte (Proboscidea, Mammalia) dans le Miocène Inférieur d'Afrique orientale: Systématique et paléoenvironnement.Géobios16: 53-77.
- ^William J. Sanders; Emmanuel Gheerbrant; John M. Harris; Haruo Saegusa; Cyrille Delmer (2010)."Proboscidea".In Werdelin, Lars; Sanders, William Joseph (eds.).Cenozoic Mammals of Africa.University of California Press. pp. 186–.ISBN978-0-520-25721-4.
- ^abZhang, Xiaoxiao; Wang, Shiqi (2021-09-02)."First report of Eozygodon (Mammutidae, Proboscidea) in Eurasia".Historical Biology.33(9): 1661–1670.Bibcode:2021HBio...33.1661Z.doi:10.1080/08912963.2020.1723579.ISSN0891-2963.S2CID213467027.
- ^Mothé, Dimila; Avilla, Leonardo S.; Zhao, Desi; Xie, Guangpu; Sun, Boyang; Mothé, Dimila; Avilla, Leonardo S.; Zhao, Desi; Xie, Guangpu (2016)."A new Mammutidae (Proboscidea, Mammalia) from the Late Miocene of Gansu Province, China".Anais da Academia Brasileira de Ciências.88(1): 65–74.doi:10.1590/0001-3765201520150261.ISSN0001-3765.PMID26839998.
- ^abTassy, P. 2018.Remarks on the cranium ofEozygodon morotoensis(Proboscidea, Mammalia) from the early Miocene of Africa, and the question of the monophyly of Elephantimorpha.Revue Paléobiologie, Genève, 37:593-607.
- ^M. Pickford "New Proboscidea from the Miocene strata of the lower Orange River Valley, Namibia"Memoir Geological Survey Namibia,19 (2003), pp. 207-256
- ^Saarinen, Juha; Lister, Adrian M. (2023-08-14)."Fluctuating climate and dietary innovation drove ratcheted evolution of proboscidean dental traits".Nature Ecology & Evolution.7(9): 1490–1502.Bibcode:2023NatEE...7.1490S.doi:10.1038/s41559-023-02151-4.ISSN2397-334X.PMC10482678.PMID37580434.