Bulletins of American paleontology . ^ by strong ridges. Occurs in the miocone of Xorth-Carolina, but is less com-mon than the preceding. Ostrea radians and (). sellaeformis belong also to the mio-cene beds, together witli the Anomia ephippium; the latter isalways brokoi. North Carolina Geol. Sur.: Emmons 187 2T8 NORTH-CAKOLINA GEOLOGICAL SURVEY. Fig. A. EXOGYRA —(Fig. A.) Shell sub-oval, very thick,lower valve convex, and cov-ered with strong corrugatedribs; apex lateral, with abouttwo volutions; upper valveflat, thick, supplied with nu-merous elevated concentricsquamose plates. It b
Bulletins of American paleontology . ^ by strong ridges. Occurs in the miocone of Xorth-Carolina, but is less com-mon than the preceding. Ostrea radians and (). sellaeformis belong also to the mio-cene beds, together witli the Anomia ephippium; the latter isalways brokoi. North Carolina Geol. Sur.: Emmons 187 2T8 NORTH-CAKOLINA GEOLOGICAL SURVEY. Fig. A. EXOGYRA —(Fig. A.) Shell sub-oval, very thick,lower valve convex, and cov-ered with strong corrugatedribs; apex lateral, with abouttwo volutions; upper valveflat, thick, supplied with nu-merous elevated concentricsquamose plates. It belongsto, and is, one of the charac-teristic fossils of the greensand at Black Eock, on theCape Fear, and at RockyPoint, twenty miles north ofWilmington. It is found in the mioccne at several places on the Cape Fear, but its prCvS- ence is due to Fig. B.
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Keywords: ., bookcentury1800, bookdecade1890, bookidbulletinsofa, bookyear1895
