. Bulletins of American paleontology. . ( 3 x30 4 x70 Text-ligure 55.—Lepicytliaia polygoiia (Gabb). NMB H 18136. NMB locality 1590.^: Rio Gurabo. Dominican Republic. Cercado Formation Height mm. width mm. 1. oblique front view; 2. enlargement of apical area; 3. apical area; 4. enlargement of apical view. Description.—Of medium to large size, biconic, moderately slender. Protoconch consists of volu- tions. The surface of the first one and a half volutions is smooth, the remainder of the protoconch sculptured by up to 17 slightly opisthocline axial riblets. Apex not pointed. Number
. Bulletins of American paleontology. . ( 3 x30 4 x70 Text-ligure 55.—Lepicytliaia polygoiia (Gabb). NMB H 18136. NMB locality 1590.^: Rio Gurabo. Dominican Republic. Cercado Formation Height mm. width mm. 1. oblique front view; 2. enlargement of apical area; 3. apical area; 4. enlargement of apical view. Description.—Of medium to large size, biconic, moderately slender. Protoconch consists of volu- tions. The surface of the first one and a half volutions is smooth, the remainder of the protoconch sculptured by up to 17 slightly opisthocline axial riblets. Apex not pointed. Number of teleoconch whorls up to their profile straight on early spire whorls, slightly convex on later spire whorls. The first two teleoconch whorls are somewhat carinated near the abapical suture and thus overhanging it. Teleoconch whorls sculptured by orthocline to slightly opisthocline axial ribs. Their number per whorl is usually eight or nine, rarely sev- en, or up to ten. The axial ribs may or may not be alined on successive whorls. They are narrow adapi- cally and wider abapically. Interspaces of axial ribs concave, sculptured by three to seven incised, spiral lines on spire whorls. On later spire whorls some sec- ondary incised, spiral lines are introduced. All spiral lines cross the axial ribs. Suture not deep. Aperture narrow. Outer lip thickened. Sinus adjoining suture. 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 Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
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Keywords: ., bookauthorpaleonto, bookcentury1800, bookdecade1890, bookyear1895
