Detailed lobolite - fossil floating bladder of a crinoid Scyphocrinites elegans. Not all crinoids were attached to the seabed. Some of them had a gas-filled bladder-like organ at the end of a stem which allowed them to float in the water. Age: Silurian Locality: Morocco, Erfoud area Lobolite size: 96 x 89 x 63 mm Weight: 1017g If you have bought several items, combined shipping is possible. Please contact me: aktru@o2.pl.