- hyolithid
- adjective or noun
see hyolithes
* * *
/huy ol"i thid/, n.1. any invertebrate of the extinct genus Hyolithes, most common in the Cambrian Period, having a limy, univalve shell, and thought to be related to the pteropods.adj.2. belonging or pertaining to Hyolithes.
Useful english dictionary. 2012.