This picture is of a Favosites hisingeri (Milne-Edwards et Haime, 1851) coral fossil. It existed during the Silurian period. The fossil was found in Lickershamm, Gotland, Sweden. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.
Learn more: https://fossiilid.info/11660?mode=in_baltoscandia
