Amecystis laevis Cystoid

 

This picture shows an interesting fossil. It is an Amecystis laevis (Raymond, 1921) which is a cystoid. It was found in Bobcaygeon Formation of Simcoe County, Ontario Canada. It dates to the Middle Ordovician Period.

The picture was taken in June 2023 on the first floor of the Smithsonian Museum of Natural History in Washington D.C. USA.

Learn more about this at Smithsonian Department of Paleobiology Collections USNM 436990:

http://n2t.net/ark:/65665/374f71859-2372-4bba-82be-10cf2329d45a

http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=338770