Report of the United States Geological Survey of the territories . ! I PLATE 2 7. Paso. Fig. 1. Nautilus Dekayi 496 1, a. A peripheral and aperture view of a small specimen, consisting of the inner septate , 6. A side view of same. 1, c. A peripheral view of another specimen, showing the sinuosity of the , d. A side view of a younger specimen. 1, e. Surface-markings of last, magnified. Fig. 2. Nautilus Dekayi, var. Montanaensis 4J8 2, a. A side view of a large specimen of septate part, being maiuly an internal cast (type of the variety).2,6. A peripheral and aperture view of s
Report of the United States Geological Survey of the territories . ! I PLATE 2 7. Paso. Fig. 1. Nautilus Dekayi 496 1, a. A peripheral and aperture view of a small specimen, consisting of the inner septate , 6. A side view of same. 1, c. A peripheral view of another specimen, showing the sinuosity of the , d. A side view of a younger specimen. 1, e. Surface-markings of last, magnified. Fig. 2. Nautilus Dekayi, var. Montanaensis 4J8 2, a. A side view of a large specimen of septate part, being maiuly an internal cast (type of the variety).2,6. A peripheral and aperture view of , c. A peripheral and aperture view of a young ,tf. A side view of , c. Surface-markings of same, ,/. A side view of a larger specimen. Fort I r. - PLATE 2 8. IM-, Fig 1. Micrabacia Americana— - 1 l.«. A view of the under side, natural size (type-specimen). 1. h. The same, magnified. A vertical section, in outline, a little more magnified. 1, tl. A partial side view, magnified to show cremated edges of the septa, etc, Fig. 2. Microstizia millepunctata 4 2,a. A Fragment, natural size (type-specimen). 2, b. The same, magnified. -, <. One of the bars, or dissepiments, between the fenistrules, highly magnified to show thenumerous, crowded, minute Ostrea ( ?) subalata ir> An upper side view of the two valves united (type).Fig. (i. Chenella ele
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherwashi, bookyear1876
