Tetradiida Okulitch, 1936


Taxon overview

Order TETRADIIDA, Middle, Upper Ordovician. Colony consists of tiny prismatic corallites, Four platy laminae extend fro the corallite wall to the axis. They have axial and quadripartite increase. Septa and pores are missing, tabulae are complete and broadly spaced. The order belongs to ALGAE Rhodophyta nowadays. 

Selection of related publications
Klaamann, E. R. 1966. The incommunicate tabulata of Estonia. ENSV TA Geoloogia Instituudi uurimused , 1-97.