. Bulletins of American paleontology. 24 Bulletin 348 Table 4. —Measurements of Cymhiles centriglobus (Oppel, 1862). All measurements are in mm. specimen no. DMAX D I'D U WW WWD IVH WHD WWWH GSC 98577 GSC 98576 GSC 98578 3 49 MEAN ST. DEV, 47 Material.—Sixteen internal molds in calcareous sandstone of the Fannin Formation. Measurements.—See Table 4. Discussion. —Cymbltes centriglobus can be distin- guished from C. laevigatus. with wh
. Bulletins of American paleontology. 24 Bulletin 348 Table 4. —Measurements of Cymhiles centriglobus (Oppel, 1862). All measurements are in mm. specimen no. DMAX D I'D U WW WWD IVH WHD WWWH GSC 98577 GSC 98576 GSC 98578 3 49 MEAN ST. DEV, 47 Material.—Sixteen internal molds in calcareous sandstone of the Fannin Formation. Measurements.—See Table 4. Discussion. —Cymbltes centriglobus can be distin- guished from C. laevigatus. with which it co-occurs, by its globose shell with its broad venter and depressed whorl section. Occurrence.—The species is widely distributed in both southern and northwestern Europe where it rang- es in age from the Obtusum to the Margaritatus Zone with its acme in the Margaritatus Zone. Outside Eu- rope, the species has only been reported from the Late Pliensbachian Nicely Formation in east-central Ore- gon (Imlay, 1968). Localities. — ET4, 114. Age. — KMme Zone (Late Pliensbachian). Cymbites laevigatus (J. deC. Sowerby, 1827) Plate 1, figures 4, 5; Text-figure 25d Ammonites lae\'igati(s J. de C. Sowerby, 1827, p. 135, pi. 570, fig. 3. Cymhiles siibcostidalus Spath, 1926, p. 170, pi. 11. fig. 3. Cymbites laevigatus (J. de C. Sowerby). Donovan, 1957. p. 413, figs. 1-8; Schindewolf, 1961, p. 208, pi. 29, fig. 17; pi. 30, figs. 1-7; Schlegelmilch, 1976, p. 52, pi. 22, fig. 4. Description.—Sma.\\ forms with equant to slightly depressed whorls that become compressed as the last whorl egresses. The body chamber is probably a little over half a whorl although last sutures are not clearly preserved. The mature body chamber terminates in a narrow, fairly deep constriction followed by a rostrum. Type material. -Holotype: Ammonites laevigatus J. de C. Sowerby, 1827, p. 135, pi. 570, fig. 3. Material.—Three internal molds with some shell material, preserved in calcareous sand
Size: 1846px × 1353px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorpaleonto, bookcentury1800, bookdecade1890, bookyear1895
