vaginati

Updated: May 28, 2025

The acrita were the first forms of animal life upon earth, the starting point of that great branch of organization. The polypi vaginati, in the crustaceous covering of the living mass, and their more or less articulated structure, represent the annulosa. In the radiated forms of the rotifera, and the simple structure of the polypi rudes, we are reminded of the radiata.

Robert Chambers - Vestiges of the Natural History of Creation