Jimbacrinus bostocki are known for having five tentacle-like structures and they existed in the Ordivician and Permian periods. This particular one is from the early Permian period in Western Australia. Crinoids are a type of echinoderm which is a name used to describe animals such as starfish and sea urchins. These crinoids most likely used their pinnules to feed on small animals and other small particles on the sea floor.
This specimen was found at Jimba Jimba Station in Western Australia.