Dinocardium robustum (John Lightfoot, 1786) Atlantic Giant Cockle

Dinocardium robustum (John Lightfoot, 1786) Atlantic Giant Cockle

     Locally in northeast Florida, the species is often found totally exposed on top of the substrate with valves gaping - such as depicted above.  Sandy mud substrate, Tolomato River, Vilano Beach, St. Johns County, Florida 2/21/2008