Dictionary
hy•ol•i•thid
Pronunciation: (hī-ol'i-thid), [key]—
n.
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.
belonging or pertaining to
Hyolithes.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.