Gom·pho·the·ri·um | \ˌgäm(p)fōˈthirēəm\

Definition of Gomphotherium 

: a large genus (the type of the family Gomphotheriidae) of extinct elephants widely distributed in the Miocene and Pliocene and distinguished by a greatly elongated lower jaw bearing broad flat terminal tusks shaped like shovels

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History and Etymology for Gomphotherium

New Latin, from Greek gomphos + New Latin -therium

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