United States or Lebanon ? Vote for the TOP Country of the Week !
Part of a full-grown compound mass. These fossils, together with numerous species of Zaphrentis, Amplexus, Cyathophyllum, Clisiophyllum, Syringopora, and Michelinia, form a group of rugose corals widely different from any that followed them. Cyathocrinus planus, Miller. Body and arms. Cyathocrinus caryocrinoides, M'Coy. a. Surface of one of the joints of the stem. b.
They became extinct at the end of the Silurian. The corals of the SYRINGOPORA family are similar in structure to chain corals, but the tubular columns are connected only in places. The blastoid is stemmed and armless, and its globular "head" or "calyx," with its five petal-like divisions, resembles a flower bud.
Word Of The Day