description Neotherium mirum Overview
Neotherium mirum is an extinct odobenid mammal from the Middle Miocene and is regarded as a relatively basal member of the walrus lineage. Fossils attributed to the species were discovered in the Sharktooth Hill Bonebed of California, a well-known marine fossil deposit. Its anatomy combines features associated with early walruses with traits that differ from the specialized tusked forms living today.
help Neotherium mirum FAQ
What kind of animal was Neotherium mirum?
Neotherium mirum was an extinct odobenid, meaning it belonged to the broader walrus family. It is regarded as a relatively basal member of the walrus lineage rather than a modern walrus species.
When did Neotherium mirum live?
It lived during the Middle Miocene, millions of years before modern walruses. Its fossils are associated with marine environments along the ancient Pacific coast of North America.
Where were Neotherium mirum fossils found?
Fossils attributed to the species were found in California's Sharktooth Hill Bonebed. That deposit is well known for its rich collection of Miocene marine fossils.
Was Neotherium mirum a modern walrus?
No. It was an extinct relative on the walrus branch of the pinniped family tree. Its anatomy helps paleontologists study how early odobenids evolved toward later walrus forms.
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