titanosaur マイ単語帳に追加

長い細い首とwhiplike尾の水陸両生の4足獣の草食の恐竜

amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail; of the Cretaceous mostly in the southern hemisphere.

長い細い首とwhiplike尾の水陸両生の4足獣の草食の恐竜。白亜紀の南半球産。