. The Geology of Minnesota . rices of growth and rather obscure traces of revolvinglines. Stones River group. Cannon Falls, to 25 Body whorl of a large specimen, strongly marked with wrinkles and lines ofgrowth. The specimen appears to be a cast of the exterior and is fromCannon Falls, Minnesota. Geological and Natural History Survey ofMinnesota, Museum Register No. 5836. Fig. 26 Holopea similis U. and S 1066 Dorsal view of an average example of the form which we have separatedprovisionally from H. ampla and H. obliqua under this name. Shales of theBlack River group, Fillmore coun


. The Geology of Minnesota . rices of growth and rather obscure traces of revolvinglines. Stones River group. Cannon Falls, to 25 Body whorl of a large specimen, strongly marked with wrinkles and lines ofgrowth. The specimen appears to be a cast of the exterior and is fromCannon Falls, Minnesota. Geological and Natural History Survey ofMinnesota, Museum Register No. 5836. Fig. 26 Holopea similis U. and S 1066 Dorsal view of an average example of the form which we have separatedprovisionally from H. ampla and H. obliqua under this name. Shales of theBlack River group, Fillmore county, Minnesota. Geological and NaturalHistory Survey of Minnesota, Museum Register No. 7381. Figs. 27 and 23 Holopea supraplana U. and S 1068 27 Dorsal view of a cast of the interior. Lower part of Fusispira bed, Kenyon, Minnesota. 28 Apertural view of the largest specimen seen. Though a cast of the interior, it gives a good idea of the strongly inrolled thin inner lip. Kenyon,Minnesota. Vol. III. (©astp®p@da,] Plate


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