Order TETRADIIDA
Order Tetradiida Okulitch, 1936

Taxon ID: 319 / 2014-02-25
Belongs to: Tabulata
Sister taxa: Chaetetida | Sarcinulida | Favositida | Heliolitida | Auloporida
Contains: Tetradiidae
Stratigraphic range: Middle Ordovician Upper Ordovician | ~ 471,8–443,7 Ma
Baltoscandian species (in database): 1

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. 

Picture Gallery (Tetradiida)

Tetradiida
Tetradiida
Tetradiida

Selection of related publications

  • Klaamann, 1966b. The incommunicate tabulata of Estonia