cup corals
Cyathophylloid Cy`a*tho*phyl"loid, n. (Paleon.) A fossil coral of the family {Cyathophyllid[ae]}; sometimes extended to fossil corals of other related families belonging to the group Rugosa; -- also called {cup corals}. Thay are found in paleozoic rocks. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Cyathophylloid — Cy a*tho*phyl loid, n. (Paleon.) A fossil coral of the family {Cyathophyllid[ae]}; sometimes extended to fossil corals of other related families belonging to the group Rugosa; also called {cup corals}. Thay are found in paleozoic rocks. [1913… …   The Collaborative International Dictionary of English

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