from the GNU version of the Collaborative International Dictionary of English
- n. An extinct genus of brachiopods, very characteristic of the Carboniferous rocks.
from The Century Dictionary and Cyclopedia
- n. A genus of protrematous straight-hinged brachiopods found in Devonian, Carboniferous, and Permian formations, and especially abundant in and characteristic of the last two.
Sorry, no etymologies found.