Definitions
from The Century Dictionary.
- noun A genus of prionodesmacean pelecypods having compressed, equivalve, concentrically plicated, thin-walled shells, with rounded outlines and short straight hinge-line. The species range from Silurian to Jurassic, and are especially abundant in Permian, Triassic, and Jurassic formations.
Etymologies
Sorry, no etymologies found.
Support
Help support Wordnik (and make this page ad-free) by adopting the word posidonomya.
Examples
Sorry, no example sentences found.
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.