What does "eurypterid" mean?

A large, prehistoric, carnivorous arthropod, of the class †Eurypterida, thought to be one of the first animals to venture onto land.

What is a synonym for "eurypterid"?

Common synonyms include: animal, dinosaur, mammoth.

Pronounced //jʊəˈɹɪp.tə.ɹɪd//.

/jʊəˈɹɪp.tə.ɹɪd/ noun

noun ·Rare ·Advanced level

Noun

1
A large, prehistoric, carnivorous arthropod, of the class †Eurypterida, thought to be one of the first animals to venture onto land.
2
large extinct scorpion-like arthropod considered related to horseshoe crabs wordnet

Borrowed from translingual Eurypterida. By surface analysis, eury- + -pter + -id.