Classic Cystoids
Caryocrinites ornatus (Hall, 1852)
and
Hallopora elegantula (Hall, 1852)
and
Hallopora elegantula (Hall, 1852)
This unique find shows how bryozoan can grow (as epifauna) on a host, in this case a Caryocrinites ornatus cystoid. As the bryozoan (Hallopora elegantula) continued to grow and branch out the weight became too much for the cystoid to support and finally fell over.
Callocystites jewetti Say, 1825
Apiocystites elegans Hall, 1852