Order Baerida Borojevic, Boury-Esnault & Vacelet, 2000

Abstract

Baerida Borojevic et al. (Calcarea, Calcaronea) contains three families with a leuconoid aquiferous system without radial symmetry, char- acterized by a skeleton either made exclusively of microdiactines or in which microdiactines constitute predominantly a specific sector of the skeleton. As in Lithonida they are represented by well characterized and very distinctive genera, suggestive of long-term evolution.