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.
Cyathophylloid \Cy`a*tho*phyl"loid\ (s?`?-th?-f?l"loid), a. [NL.
cyathophyllum, fr. Gr. ky`aqos a cup + fy`llon a leaf.]
(Paleon.)
Like, or pertaining to, the family {Cyathophyllid[ae]}.