This is a fine example of a Placunanomia plicata (extinct) fossil oyster shell that dates from the late Pliocene period. It was recovered from the Tamiami formation in southwest Florida.
The specimen offered here is one shell that measures approx. 75mm x 50mm.
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing the specimen shown. Your purchase will include an ID label.