2" Carabocrinus Crinoid Fossil From Ontario

This is a large Carabocrinus theca with partial arm for the Verulam Formation of Ontario. Crinoids of this genus are rare finds, and even though it's not complete it's still a pretty cool fossil.

Crinoids are commonly known as sea lilies, though they are animals, not plants. They are echinoderms related to starfish, sea urchins, and brittle stars. They attached themselves to the sea floor and had feathery, tentacle-like appendages which they used to capture particles of food. First appearing in the Ordovician period, 488 million years ago, they still survive to this day in deep water.