Dr Katie StrangHere’s some wee 330 million year old crinoid ossicles that wonderfully illustrate their five-fold radial symmetry. Nature is awesome 🖤 #ScottishFossils #ScottishGeology
reo eveleth@palaeokatie Frantically googling "crinoid ossicles"
@roseveleth when the crinoid was alive individual ossicles (also called columnals) would have been held together by soft tissue, forming the animal’s stem. The stem was used to anchor the crinoid to the sea floor 😊