Box 26, Folder 1: Paleontology Draft 7: AcePhala I

Amphidesma inaequale Say Jour Acad. Pha vol 7-H.C. Lea Proc. 4 p95

Tertiary

[Sketch-Amphidesma linosa].

Amphidesma linosa, Conrad, Tert. Foss. p. 42. Am. Jour. Sc. 2d. Ser. vol. 1 p. 397 pl. 4 fig. 2

Ovate, plano=convex with fine regular concentric prominent lines; right valve with a somewhat prominent obtuse fold over the imbonial slope, the base of which is emarginate; posterior side short; extremity subtruncated, or very obtusely rounded, direct; beaks slightly prominent; fosset produced, elliptical.-Palleal sinus very profound; in the right valve are two diverging compressed cardinal teeth & the lateral teeth are very distinct.

L. 1.6 H. 1.3

Eocene Tertiary Claiborne, Alab.

Ac

Amphidesma Mississippiensis Proc. Ac. Nat Sc. vol 3 p 291

Oblong-oval, somewhat compressed, inequilateral, smooth, with a few distant concentric impressed lines; posterior side with a slight-fold, end obtusely rounded; anterior end rounded; cartilage pit very narrow, elliptical; lateral teeth in the right valve distant, in the left wanting. L. 1.1 H 0.7

Eocene Tertiary Vicksburg, Miss