. College collection of palaeontology. 148 ECHINODHKMATA. ORDER CYSTIDEA. The body, in this order, was enclosed in a box of calcareous plates joined bj their edges. True arms were rarely present, and smaller than in the Brachiata. The Cystideans are confined to the Palaeozoic ages. They appear in the Cambrian and culminate in the Lower Silurian. No. 463. Agelacrinus Cincinnatiensis, Roemer. Cincinnati Group (Lower Silurian), Covington, No. 464. Caryocrinus ornatus, Say. Body, without column. In this genus all the plates of the calyx are perforated with many pores. This beautifully marked
. College collection of palaeontology. 148 ECHINODHKMATA. ORDER CYSTIDEA. The body, in this order, was enclosed in a box of calcareous plates joined bj their edges. True arms were rarely present, and smaller than in the Brachiata. The Cystideans are confined to the Palaeozoic ages. They appear in the Cambrian and culminate in the Lower Silurian. No. 463. Agelacrinus Cincinnatiensis, Roemer. Cincinnati Group (Lower Silurian), Covington, No. 464. Caryocrinus ornatus, Say. Body, without column. In this genus all the plates of the calyx are perforated with many pores. This beautifully marked specimen is from the Niagara Group (Upper Silurian), Lewiston, N. Y. No. 465. [936, Cast]. Lepadocrinus (Apiocystites) G-ebhardi, [ Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ward's Natural Science Establishment, inc. Rochester
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