Characters: Colonies are weakly attached plates
which are often circular. There is little valley
formation, especially towards the colony centre
and such valleys that are form ...
Characters: Colonies are thin, weakly attached
plates with interconnecting, slightly sinuous
narrow valleys. Corallite centres are usually in
single rows. Columellae are rudim ...
Characters: Colonies are solid, rounded, often
circular plates. Continuous broad shallow valleys
radiate from the original point of growth.
Corallite centres are vaguely conce ...
None
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