Here is a coral fossil called Calapoecia huronensis (Billings, 1865). It existed in the Ordovician Period (490-443 million years ago). The fossil was found in the Kentucky USA.
The fossil was on display in the Evolving Planet section of The Field Museum of Natural History in Chicago Illinois, USA as of August 2020. Accession number is UC91.
Learn more about this fossil here:
