释义 |
mas·to·don·sau·rus \ˌ ̷ ̷ ̷ ̷ˌdänˈsȯrəs\ noun Usage: capitalized Etymology: New Latin, from Mastodon + -saurus : 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 |