. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 259 Distinguishing Clinrarters.— Deeply sinuate or emarginate posterior marg-in; strong nmbonal ridge, Avitli depression above it; produced post-cardinal extremity; strong, ele- vated, distant, lamellose, concentric ridges, with finer strite between. Found in the Lower shales, down to twenty-five feet below the Encrinal limestone, at Sections 5 to 7 (common); also in the shale below the Nautilus bed, in Aveiw's Creek. Genus MACRODON. Lycett. [Ety. : Macros, long ; odous, tooth.] (1845: Murch. Geol. Chelt.) Shells
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 259 Distinguishing Clinrarters.— Deeply sinuate or emarginate posterior marg-in; strong nmbonal ridge, Avitli depression above it; produced post-cardinal extremity; strong, ele- vated, distant, lamellose, concentric ridges, with finer strite between. Found in the Lower shales, down to twenty-five feet below the Encrinal limestone, at Sections 5 to 7 (common); also in the shale below the Nautilus bed, in Aveiw's Creek. Genus MACRODON. Lycett. [Ety. : Macros, long ; odous, tooth.] (1845: Murch. Geol. Chelt.) Shells with equal inequilateral valves, which are trans- versely sub-elliptical, or sub-ovate, in outline. The anterior end is angular at the cardinal line and rounded below. The posterior end is rounded or obliquely sub-truncate. Beaks anterior to the middle; cardinal line long and straight. Ligament external. Cardinal teeth several; lateral teeth two to four, situated near the extremity of the cardinal line. Surface marked b}'concentric stri^, which are often lamellose, and in some species by fine radiating lines. Macrodox hamiltonli:. Hall. (Fig. 178.) (Pal. N. Y., Vol. Y.,Pt. L, p. 349, PL LL) Distinguishing Cimracters.— Obtusely sub-angular ends of hinge line; rounded post-inferior end; strong, distant. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Buffalo Society of Natural Sciences. Buffalo, N. Y. : Buffalo Society of Natural Sciences
Size: 2231px × 1120px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, books, booksubjectnaturalhistory
