ウミサソリ

noun

eurypterid; sea scorpion

Refers to an extinct group of aquatic arthropods from the Paleozoic era; a technical term in paleontology.

• ウミサソリは古こ生せい代だいに生せい息そくしていた巨きょ大だいな節せっ足そく動どう物ぶつです。

  Eurypterids were giant arthropods that lived during the Paleozoic era.