Cardita Subquadrata

Cardita Subquadrata, [Vanuxem] Conrad Proc. Ac. Nat Sc. vol 3 p 298

Trapezoidal, compressed; valves flattened in the middle; radii about twenty-five, broad on the disc, with very narrow interstices, and each rib with a crenulated carina in the middle; posterior to the umbonial slope the ribs are smooth, not carinated; anterior side short, rounded at the end; posterior margin obliquely truncated.

L. 0.6 H 0.35

Eocene Tertiary

St. Mathews Parish S. Car.