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Books Books 1 - 4 of 4 on The second lateral sinus is about half as wide and nearly two-thirds as long as the....
" The second lateral sinus is about half as wide and nearly two-thirds as long as the first, more or less oblique, and rather deeply divided at the extremity into two subequal, bifurcating and obtusely digitate terminal branches. The second lateral lobe... "
The University Geological Survey of Kansas - Page 475
1898 - 594 pages
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Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 14

Natural history - 1863
...terminal brunches. Between the ventral lobe and the umbilical margin there are two small auxiliary lobes, the first of which has two or three digitations...nearly simple, or but slightly sinuous on the margins. In the number and arrangement of the lobes and saddles of its septa, as well as in their mode of branching,...
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The Colorado Formation and Its Invertebrate Fauna, Volume 8, Issue 106

Timothy William Stanton - Geology, Stratigraphic - 1893 - 288 pages
...second lateral sinus, but a little narrower, and ornamented with three variously digitate termiifal branches, the middle one of which is longer than the...nearly simple or but slightly sinuous on the margins." The only examples of this species I have seen are the types, consisting of the specimen figured and...
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Bulletin - United States Geological Survey, Issues 103-110

Geology - 1893
...exactly central. The third lateral lobe is small, being less than half as long, and scarcely two thirds as wide as the second lateral, and provided with three...nearly simple or but slightly sinuous on the margins." The only examples of this species I have seen are the types, consisting of the specimen figured and...
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Reports, Volume 4

Kansas Geological Survey - Geology - 1898
...rather deeply divided at the extremity into two subequal, bifurcating and obtusely digitate terminal branches. The second lateral lobe is as long as the...on the margins." This form occurs associated with Scapliites warrenii in the Blue Hills shales of the Fort Benton formation. It is found in the outcrops...
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