Box 26, Folder 3: Paleontology Notes 7: Acephala: 3

Eocene Tertiary

Claiborne Alab.

Lucina contracta, Say, Jour. Ac. Nat Sc. Vol 4 p 145 pl 10 fig 8; Conrad, Med. Ter. Fos. p 40 pl 20 fig 5.

Shell orbicular, slightly ventricose, with from thirty to forty concentric laminae, the intervening spaces with well defined striae parallel to the laminae; the anterior side with a double fold, rather obscure or obsolete; posterior side with two indistinct grooves, the marginal one least impressed; lunule narrow, elongated, carinated on the outer and inner margins; cardinal teeth two in each valve.

L 2.2 H 2.2

Medial Tertiary Petersburgh & City Point Va

Lucina crenulata, Conrad, Med. Ter. Foss. p 39 pl 20 fig 2.

39

Shell lenticular, with numerous concentric laminae; a submarginal fold on the posterior side; posterior extremity truncated; cardinal line straight, oblique; beaks central; cardinal and lateral teeth distinct; margin minutely crenulated.

L. 0.3 H 0.3

Medial Tertiary & Post Phocene Suffolk Va Wilmington N Car Charleston S Car

Also recent -- at Cape Henry, Coast of Virginia

Lucina cribraria, Say, Jour Ac. Nat. Sc. Vol 4 p 147 pl 13 fig 1

Orbicular, convex, with numerous longitudinal costae, & distinct elevated concentric lines; dorsal margin obtusely angulated anteriorly & posteriorly; lunule very distinct; inner margin crenate; posterior muscular impression rectilinear. L. 0.5 H 0.5

Tertiary Maryland

Lucina divaricata, Lamarck; Conrad, Med Ter. Foss. p 39 pl 20 fig 3. L. undulata Lamarck; Tellina divaricata, Linnaeus

Shell orbicular, subglobose, white, antiquated with diverging oblique stria.

L. 0.6 H 0.55

Medial & Upper Tertiary

Near City Point Va. N Carolina