Box 26, Folder 2: Paleontology Notes 7: Acephala 2

Eocene Tertiary

Alabama

Cardita Rotunda, Conrad, Ter. Foss. Venericardia rotunda, Lea, Cont. to Geol. p 70 pl 2 fig 48

Shell rotund, inequilateral, slightly inflated, longitudinally and closely ribbed; substance of the shell rather thick; lunule small, ovately cordate; beaks slightly elevated, recurved; ribs about twenty six, and furnished with closely set arched scales; teeth rather oblique; cicatrices rather impressed; cavity of the shell some-what deep and rounded; margin largely crenulate. L. 1.0 - H. 1.0 D 0.6

Eocene Tertiary Claiborne, Alab.

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.

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

Orbicular, inequilateral, ventricose, with about twenty-eight rounded prominent narrow radii; ligament margin very oblique, short; ends obtusely rounded; inner margin slightly crenulated. L. 0.35 - H 0.35

Eocene Tertiary St. Mathews Parish S. Car.

Cardita trapezium, Tuomey, Proc. Ac. Nat. Sci Vol 6 p 194

Shell rhomboidal, cordate, ventricose, ribs acute, crossed by coarse incremental lines.

L. 2.25 H 2. D2.