Isolated ossicles of the family Eospondylidae Spencer et Wright, 1966, in the Lower Devonian of Bohemia (Czech Republic) and correlation of the systematic position of eospondylid brittlestars (Echinodermata: Ophiuroidea: Oegophiurida) Frederick H.C. Hotchkiss , Rudolf Prokop , Václav Petr 2007 | volume 63 | issue 1 | pages 3–18 PDF