Deltatheridium
| Deltatheridium | |||||||||||||
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| Ocorrência: Santoniano-Maastrichtiano ~84,9–70,6 Ma | |||||||||||||
 Deltatheridium pretrituberculare | |||||||||||||
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| Classificação científica | |||||||||||||
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| Espécies | |||||||||||||
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Deltatheridium (que significa "besta triângulo" ou "besta delta") representa uma espécie extinta de metatheriano. Viveu no que hoje é a Mongólia durante o Cretáceo Superior, há cerca de 80 milhões de anos.[1] Um estudo de 2022 sugeriu fortemente que Deltatheridium era um marsupial, tornando-o o membro mais antigo conhecido de este grupo.[2]
Possuía um comprimento de cerca de 15 cm. Seus dentes indicam que era carnívoro. Um espécime de Archaeornithoides pode atestar um ataque de este mamífero, com o crânio exibindo marcas de dentes que coincidem com os dentes de Deltatheridium.[3]
Outros mamíferos do Mesozoico da Mongólia
Referências
- ↑ «Discovery Of New Fossils In Gobi Desert Of Mongolia Provides Important Insight Into Early Mammal Evolution». Sciencedaily.com. Consultado em 30 de Novembro de 2021
- ↑ Velazco, Paúl M; Buczek, Alexandra J; Hoffman, Eva; Hoffman, Devin K; O’Leary, Maureen A; Novacek, Michael J (30 de Janeiro de 2022). «Combined data analysis of fossil and living mammals: a Paleogene sister taxon of Placentalia and the antiquity of Marsupialia». Cladistics. 38 (3): 359–373. PMID 35098586. doi:10.1111/cla.12499
- ↑ Elżanowski, A. Wellnhoffer, P. (1993). "Skull of Archaeornithoides From the Upper Cretaceous of Mongolia". earth.geology.yale. Yale.edu/~ajs/1993/11.1993.08Elzanowski.pdf . American Journal of Science
Leitura adicional
- Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 403
- Rougier, G. W.; Wible, J. R.; Novacek, M. J. (1998). «Implications of Deltatheridium specimens for early marsupial history». Nature. 396 (6710): 459–63. Bibcode:1998Natur.396..459R. PMID 9853752. doi:10.1038/24856
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