This fossil was displayed on August 2022, at the Harvard Museum of Natural History
in Cambridge, Massachusetts, USA. This crinoid fossil is called
Antedon primatus (Goldfuss, 1966). This specimen was found in Solnhofen, Germany. It dates to the Jurassic Period.
https://hmnh.harvard.edu/
https://mczbase.mcz.harvard.edu/guid/MCZ:IP:110937