Crinoids

Limestone

Crinoids are marine relatives of starfish and sea urchins. Some species exist today, but they were more numerous during the Carboniferous Period and form the bulk of fossils in some limestone beds. This does not seem the case in Redmire, where crinoid fossils are small and less numerous. Crinoid fossils tend to be present as fragmented lengths and cross sections of tubular stalks.