Gomphotherium

...They have no canines. The Gomphotheridae ( Palaeomastodon , Gomphotherium , Platybelodon , Amebelodon , etc.), which were widely distributed from the Eocene to the Pleistocene, had a pair of fangs on both the top and bottom, and their molars had low crowns and nipple-like projections on the biting surfaces. They had long bodies and short limbs.

*Some of the terminology that mentions "Gomphotherium" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…犬歯はない。始新世～更新世に広く分布したゴンフォテリウム科(パレオマストドンPalaeomastodon，ゴンフォテリウムGomphotherium，プラチベロドンPlatybelodon，アメベロドンAmebelodonなど)は上下ともに1対のきばをもち，臼歯（きゆうし）は歯冠部が低く，咬面（こうめん）に乳頭状の突起がある。胴が長く四肢が短い。…

※「Gomphotherium」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報