File:Carapace of Arenosicaris inflata, a phyllocarid, Blackberry Hill, Wisconsin, Cambrian.jpg

Summary
Carapace of Arenosicaris inflata, a phyllocarid, Blackberry Hill, Wisconsin, Cambrian, Elk Mound Group, photographed by Todd Gass Kenneth C Gass (talk) 03:19, 28 July 2012 (UTC)