Mastodonsaurus

noun

Mas·​to·​don·​sau·​rus

: a genus of Old World Triassic amphibians containing the largest known labyrinthodonts with the skull over four feet long and having at the front of the lower jaw a pair of short tusks that close into openings piercing the premaxillae

Word History

Etymology

New Latin, from Mastodon + -saurus

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