. The Geology of Minnesota . asts of the Interior, the inner line representing the ventral side ofthe whorl in B. mohri, the lower that of B. capax^ As shown by the outlines,the surface descends into the umbilicus much more abruptly in the former thanin the 44 and 45 Bellerophon mohri Miller 920 44 Lateral view of a large cast, imperfect at the aperture. Richmond, Indiana. (Compare with figures 41 and 42, and refer to explanation of figure 43.) 45 Apertural view of a testiferous example for comparison with flgure 51 on plate LXIII. Figs. 46 to 49 Kokenia costalis U. and S 882 46 a
. The Geology of Minnesota . asts of the Interior, the inner line representing the ventral side ofthe whorl in B. mohri, the lower that of B. capax^ As shown by the outlines,the surface descends into the umbilicus much more abruptly in the former thanin the 44 and 45 Bellerophon mohri Miller 920 44 Lateral view of a large cast, imperfect at the aperture. Richmond, Indiana. (Compare with figures 41 and 42, and refer to explanation of figure 43.) 45 Apertural view of a testiferous example for comparison with flgure 51 on plate LXIII. Figs. 46 to 49 Kokenia costalis U. and S 882 46 and 47 Lateral and dorsal views, the inner whorls restored, of the type of this genus andspecies. Clitambonites bed, Trentoi group, Oannon Falls, Minnesota. 48 Transverse sections of the last whorl. The lower side of the figure is the dorsal. 49 Portion of the broad dorsal band and of the right slope, x3. ;ftj5W^(^Ar^]immwrtArt> MEJiKDCU ^ t ^.^v^ af>y n^xyirKTOtrpCTmrv- [@astp@p@da,j Vol. III. Plate PLATE LXV. Page. Figs, land 2 Tetranota macra D. and S 879 Dorsal and lateral views of the type of this species. Stones River group, Minne-apolis, Minnesota. The specimen is a good cast of the interior and shows theexpanded mouth, the peculiarly lean appearance and strongly ribbed charac-ter of the fossil. Figs. 3 to 9 Tetranota SEXCARINATA U. and S 878 3 and 4 Two views of an excellent specimen from the Fusispira bed at Wykoff, Minne-sota. Though a cast of the interior, the surface markings are clearly 6 Dorsal and lateral views of a cast of an early variety of the species. Stones Rivergroup, Minneapolis, Minnesota. 7 Sectional view of preceding specimen. 8 Section of a whorl of a specimen from the Stones River group, at Dixon, Illinois. 9 Section of whorl of Wykoff specimen. Figs. 10 to 18 Tetranota bidorsata Hall sp 877 10 and 11 Two views of a large cast from the lower part of the Fusispira bed near CannonFalls, Minnesota. This specimen
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Keywords: ., bookcentury1800, bookdecade1890, bookidgeologyofmin, bookyear1897
