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Deltatheridium

From Wikipedia, the free encyclopedia

Deltatheridium
Temporal range: Santonian-Campanian
~84.9–70.6 Ma
Deltatheridium pretrituberculare
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Deltatheroida
Family: Deltatheridiidae
Genus: Deltatheridium
Gregory & Simpson, 1926
Species
  • D. pretrituberculare (type)
  • D. nessovi

Deltatheridium (meaning triangle beast or delta beast) is an extinct species of metatherian. It lived in what is now Mongolia during the Upper Cretaceous, circa 80 million years ago.[1] A study in 2022 strongly suggested that Deltatherium was a marsupial, making it the earliest known member of this group.[2]

It had a length of about 15 cm (5.9 in). Its teeth indicate it was carnivorous. One specimen of Archaeornithoides might attest an attack by this mammal, the skull bearing tooth marks that match its teeth.[3]

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Transcription

Other Mesozoic mammals from Mongolia

References

  1. ^ "Discovery Of New Fossils In Gobi Desert Of Mongolia Provides Important Insight Into Early Mammal Evolution". Sciencedaily.com. Retrieved 30 November 2021.
  2. ^ Velazco, Paúl M; Buczek, Alexandra J; Hoffman, Eva; Hoffman, Devin K; O’Leary, Maureen A; Novacek, Michael J (30 January 2022). "Combined data analysis of fossil and living mammals: a Paleogene sister taxon of Placentalia and the antiquity of Marsupialia". Cladistics. doi:10.1111/cla.12499.
  3. ^ Elżanowski, A. Wellnhoffer, P. (1993). "Skull of Archaeornithoides From the Upper Cretaceous of Mongolia". earth.geology.yale.edu/~ajs/1993/11.1993.08Elzanowski.pdf . American Journal of Science

Further reading


This page was last edited on 7 September 2023, at 17:27
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