- eurypterid (n.)
[eurypterid 词源字典]
- fossil swimming crustacean of the Silurian and Devonian, 1874, from Greek eurys "broad, wide" (see eury-) + pteron "feather, wing" (see pterodactyl); so called from their swimming appendages.[eurypterid etymology, eurypterid origin, 英语词源]