Hyolithid-like hyoliths without helens from the early Cambrian of South China, and their implications for the evolution of hyoliths

A small hyolith, with a triangular operculum and a conical-pyramidal conch with a sharp apex, originally documented as Ambrolinevitus ventricosus, is revised based on new material from the Chengjiang biota. The o...
Source: BMC Evolutionary Biology - Category: Molecular Biology Authors: Tags: Research Source Type: research