[ hahy-ol-i-thid ]
/ haɪˈɒl ɪ θɪd /
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.
belonging or pertaining to Hyolithes.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019