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pantothere

American

[pan-tuh-theer] / ˈpæn təˌθɪər /

noun

any animal of the extinct order Pantotheria that lived during the late Mesozoic Era, believed to be the ancestor of the marsupial and placental mammals.

< New Latin Pantotheria name of order, equivalent to panto- panto- + -theria, plural of -therium -there

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023