Text-fig. 2. Gemmacrinus perplexus PROKOP et PETR, 1989. A – Specimen NM-L31684; cavity of the conch of gastropod Epiptychia? PERNER, 1911 with preserved calyxes of crinoid Gemmacrius perplexus PROKOP et PETR, 1989. Scale bar represents 5 mm. B – The same specimen; best preserved calyx in detail. Lower Devonian, Pragian, Koněprusy Limestone, Suchomasty, "Na Plešivci" quarry. Scale bar represents 1 mm. in Unique Discovery Of The Crinoid Gemmacrinus Perplexus Prokop Et Petr, 1989 In The Lower Devonian, Koněprusy Limestone (Barrandian Area, The Czech Republic)

Text-fig. 2. Gemmacrinus perplexus PROKOP et PETR, 1989. A – Specimen NM-L31684; cavity of the conch of gastropod Epiptychia? PERNER, 1911 with preserved calyxes of crinoid Gemmacrius perplexus PROKOP et PETR, 1989. Scale bar represents 5 mm. B – The same specimen; best preserved calyx in detail. Lower Devonian, Pragian, Koněprusy Limestone, Suchomasty, "Na Plešivci" quarry. Scale bar represents 1 mm.