Seirocrinus Subangularis Holzmaden Crinoid Sea Lily In Black Holzmaden Fleins Shale - Single [RARE]This remarkable reconstruction of a 180 million year old crinoid sea lily provides a rare glimpse into our ancient oceanic world. Each specimen undergoes an exacting and highly specialised preparation process to reveal its natural beauty. The original bedrock is meticulously removed from every individual stem segment, each averaging approximately 4 mm, exposing the delicate structures in striking detail, from the crown like flower head to the root