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