Hi, @June-withers! Using Macrostrat: https://macrostrat.org/map/#/z=1.5/x=16/y=23/bedrock/lines/ to figure out how old it is might be useful for narrowing down the identification. Additionally, there is a really helpful website called the Echinoid Directory (https://www.nhm.ac.uk/our-science/data/echinoid-directory/) by the Natural History Museum…[Read more]

Hi, @June-Withers. This appears to be an echinoid! You can use the https://www.nhm.ac.uk/our-science/data/echinoid-directory/ to identify it further.