a. and sb. [f. mod.L. Cyathophyllum (f. Gr. κύαθος cup + φύλλον leaf) + -OID.]
A. adj. Akin to the fossil cup-corals of the genus Cyathophyllum.
1862. Dana, Man. Geol., II. 374. Cyathophylloid corals.
1879. Geikie, in Encycl. Brit., X. 345. Corals (cyathophylloid forms …) abound, especially in the Corniferous Limestone.
B. sb. A coral of this family, a cup-coral.
1872. Dana, Corals, i. 21. The Cyathophylloids were the earliest of polyps and the most abundant in Paleozoic time.
