Number of all reefs per age
Biota reef types
Biota reef types search
BIOTA MAIN
Corals
Archaeocyaths
Siliceous sponges
Foraminifera
Echinoderms
Brachiopods
Non-rudist bivalves
Keratose Sponges
Algae
Microbes
Stromatoporoids
Rudists
Calcisponges
Bryozoans
Worms, vermetids
Tubiphytes
Unknown