[ krip-tuh-zoh-on ]
/ ˌkrɪp təˈzoʊ ɒn /


an extinct genus of algae from Precambrian and Cambrian times, forming irregularly hemispherical fossil colonies composed of layers of limy precipitate.

Origin of Cryptozoon

From New Latin, dating back to 1883; see origin at crypto-, -zoon Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019