This plate has 11 superb specimens on it. The longest specimen measures 19.5 cm and the shortest is 10.2 cm. The width of the cluster at its widest point is 15 cm. This cluster is attached to a bryozoan mass which measures 8.3 cm x 53. cm.
Callocystites jewetti Say, 1825
Here is the periproct. (waste removal valve)
Apiocystites elegans Hall, 1852
Here is the one and only specimen found with the feeding arms extended!
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