. The Geology of Minnesota . the same locality. 51 A third example from the locality mentioned. Figs. 52 to 54 Lophospira ampla Ulrich 981 52 Apertural view of a large specimen that, excepting that its spire is unusually depressed, may be considered as fairly typical of the species. Richmondgroup, Boyle county, and 54 Opposite views of a rather large example of the lower variety. Lorraine group,Newport, Kentucky. Figs. 55 and 56 Lophospira perlamellosa Ulrich 985 A specimen of this species, natural size and x2, showing the strongly lamellosesurface markings and the remarkably produ
. The Geology of Minnesota . the same locality. 51 A third example from the locality mentioned. Figs. 52 to 54 Lophospira ampla Ulrich 981 52 Apertural view of a large specimen that, excepting that its spire is unusually depressed, may be considered as fairly typical of the species. Richmondgroup, Boyle county, and 54 Opposite views of a rather large example of the lower variety. Lorraine group,Newport, Kentucky. Figs. 55 and 56 Lophospira perlamellosa Ulrich 985 A specimen of this species, natural size and x2, showing the strongly lamellosesurface markings and the remarkably produced and twisted basal group, Butler county, Ohio. Fig. 57 Lophospira SERRULATA Salter sp 968 (See also plate LXXII, fifts. 51-55.) Fragment of a natural mould of the exterior, showing the lines of growthOQ somewhat less than half of the under side of the last whorl and animpression of the broad peripheral frill with its oblique plications. StonesRiver group, Dixon, Illinois. VnL. III. [@astp®p@da,] PLATE LXXIV. Page. Figs. 1 to 4 ECCYLIOPTBRUS BELOITBNSIS U. and S 1032 (See also plate LXII, fig. 70.)Four views of a cast of the interior. Lines of growth are indicated on theouter half of the last turn, somewhat obscurely, it is true, yetj River group, Beloit, Wisconsin. Figs. 5 and 6 Eccyliopterus tkiangulus Whitfield sp 1031 (See also plate LXII, fig. 73.)Two views of a cast of the interior. There is some doubt respecting the, character of the inner whorl. It may form a closely coiled nucleus, but wedoubt it. Calciferous formation, Providence Island, Vermont. Figs. 7 to 9 Eccyliopterus volutatus Whitfield sp 1031 (See also plate LXII, flgs, 71-72.) 7 Lateral view of a cast of the interior,-preserving a portion of the collar-lilfe upper carina. Calciferous formation. Fort Cassin, Vermont. 8 Under side of another cast from the same locality. 9 Small portion of the shell from the inner or rather upper slope, beginning at the inner basa
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