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

Lucina divaricata, Linneus [Linnaeus]; Lamarck; De Kay, Nat. Hist. N.Y. p. 214 pl 26 fig. 273.

Shell thin, orbicular, equilateral; beaks small, prominent, inclined forwards; basal margin regularly rounded and crenate; surface with well marked concentric lines, crossed by deep oblique lines passing towards both ends, and giving a beautiful reticulated appearance; cardinal teeth minute; one in the right valve very small, and two small diverging ones in the left, lateral teeth often wanting.

L. 0.7 H 1.0 D 0.5

Middle Tertiary Petersburgh Va

Also recent-Atlantic coast, & in Europe

Lucina dolabra, Conrad, Ter. Foss. Astarte recurva, Lea, Cont to Geol. p 61 pl 2 fig 34

Shell subrotund, angular before, emarginate behind, deeply emarginate before the beaks, rather compressed, concentrically and largely striate, deeply folded behind; substance of the shell rather thick; beaks very much elevated and recurved; lunule large, deeply impressed, cordate; escutcheon long-lanceolate; posterior slope bicarinate; teeth obliquely curved; cicatrices impressed; margin finely crenulate.

L. 0.4 H 0.4 D 0.2

Eocene Tertiary Claiborne Ala

Lucina dolobra, Conrad -- Am. Jour. of Sc. Vol. 23, p. 343. -- Astarte recurvata, Lea --

Shell elevated, with distant concentric imbricated and obscure radiating striae; posterior submargin profoundly channeled; beaks prominent and curved forwards; lunule impressed, cordate; inner margin crenulated.

L. 0.5

Eocene Tertiary

Claiborne Alab.