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

Isocardia Markoei, Conrad, Proc. Nat. Inst. vol. 1 p 193 pl 2 fig 1 Ter. Fos. p 70 pl 40 fig 2

Suborbicular, inflated; length & height nearly equal, umbo very prominent, beaks profoundly incurved; posterior margin direct, rounded above, slightly curved below, obtusely angulated at its junction with the base; base regularly not profoundly curved; umbonial slope obtusely angulated; posterior slope slightly sinuous. L. 1.8 H 1.7 D 1.7

Medial Tertiary Calvert Cliffs Md.

Isocardia Rustica, Sowerby; Conrad, Med. Ter. Fos. p 20 pl 11 fig 1; Venus rustica, Sow.

[Typewritten Extract]

L. 2.7 H 2.4

Medial Tertiary

Patuxent river & near Charlotte Hall, [Illeigble/cut off..] James river, near City Point, & Williamsburg, Va. Murfreesburgh N.C.

Isocardia unioniformis

Carboniferous Limestone Brookfield, Nova Scotia (Also found in Europe)

Kellia mactroides, Conrad Proc. Ac. Nat Sc. vol 1 p. 310; K. flavagella Con Am. Mer. Conch. pl 11 fig 3; Leptormactroides, Con. Ter. Foss. p. 19 pl 10 fig. 5 P 3p 499

Medial Tertiary Maryland?