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
Cyathophyllidæ.
Cy`a*tho*phyl"loid, n.
(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.
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