Bulletins of American paleontology . G. LATIDENS.—(Fig. 69.) Differs from the preceding in its pro-portional length of base, being considera-bly greater. The crown is low, and the enamel ex-tends lower upon the outer face ; the sen-atures subequal; apex pointed. It is much more common than the G. pr istodontus. GENUS LAMNA. Teeth rather flat, narrow and elongated; smooth, andusually furnished with appendages at base. LAMNA ELEGANS.—AGASS.—(FigS. 70, 71 A: 71 A.) Tooth narrow, lanceolate; inner face quite convex, outerratlier flat and smooth; the former regularly striate at base. Fig. 71. but r
Bulletins of American paleontology . G. LATIDENS.—(Fig. 69.) Differs from the preceding in its pro-portional length of base, being considera-bly greater. The crown is low, and the enamel ex-tends lower upon the outer face ; the sen-atures subequal; apex pointed. It is much more common than the G. pr istodontus. GENUS LAMNA. Teeth rather flat, narrow and elongated; smooth, andusually furnished with appendages at base. LAMNA ELEGANS.—AGASS.—(FigS. 70, 71 A: 71 A.) Tooth narrow, lanceolate; inner face quite convex, outerratlier flat and smooth; the former regularly striate at base. Fig. 71. but rowards the middle the striae degenerate into wrinkles:the outer ones are short, and but reach the edge of the tooth atbase. The L. elegrais is very common in the miocene beds ofNorth-Carolina. Fig. 71 a, side view. L. (ODONTASPIS) C0NT0RTIDEN3. Specimens which answer to the figures of this species, givenby Prof. Gibbs, especially in the irregular form and absence North Carolina Geol. Sur.: Emmons2i0 north-carolina geological survey. 149 of denticulations at base. In other cliaracters there is only asliglit difFeience between this and the L. elegans. They arefound in the same beds. Fig. 72. *kl>^ ^i Fig. ^4 m Figs. r L. COMPEESSA. Compressed or flat, both faces convex andsub-equal, base irregularly denticulated; rootvide and spreading. It differs widely fromL. elegans and contortcdcns, but resemble?the otodus; but Prof. Gibbs remarks that theyare more lanciform, and the core more slen-der than the otodus. Figures 73 and 74 appear to belong to thelamna. They are rather thickand
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