One of the very few crinoid records in Patagonia is that of the abundant columnals of the genus Isselicrinus found in several localities in shallow marine. glauconitic sandstones of the Leticia Formation (upper middle Eocene of Tierra del Fuego Island). Some of them. up to 10 cm long. https://www.bekindtopets.com/great-pick-Nobivac-Feline-1-HCPCh-special-find/