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Deltatheridium

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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. A study in 2022 strongly suggested that Deltatheridium was a marsupial, making it the earliest known member of this group.

Wikidata facts

Parent taxon
Deltatheridiidae
Image
Deltatheridium praetrituberculare.JPG
Show 6 more facts
taxon name
Deltatheridium
taxon rank
genus
Commons category
Deltatheridium
start time
84900000-0
end time
70600000-0
time period
Late Cretaceous
Sources (1)

via Wikidata · CC0

~1 min read

Encyclopedic overview

3 sections
Contents
  • Other Mesozoic mammals from Mongolia
  • References
  • Further reading

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. A study in 2022 strongly suggested that Deltatheridium was a marsupial, making it the earliest known member of this group.

It had a length of about . Its teeth indicate it was carnivorous. One specimen of Archaeornithoides might attest to an attack by this mammal, the skull bearing tooth marks that match its teeth.

Excerpted from Wikipedia’s “Deltatheridium” article, available under the CC BY-SA 4.0 licence.