Cyathophylloid

Cy`a`tho`phyl´loid


a.1.(Paleon.) Like, or pertaining to, the family Cyathophyllidæ.
n.1.(Paleon.) A fossil coral of the family Cyathophyllidæ; sometimes extended to fossil corals of other related families belonging to the group Rugosa; - also called cup corals. Thay are found in paleozoic rocks.