This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
OrdovicianEdrio. Edrioasteroid Cystaster stellatus with the bryozoa genus Corynotrypa from the Ordovician of northern Kentucky br Taylor and Wilson Corynotrypa from the Ordovician of North America colony growth in primitive stenolaemate bryozoan Journal of Paleontology pp Wilson Disturbance and ecologic succession in an Upper