Report of the United States Geological Survey of the territories . ,5. Another view of the same, showing by the section of the outer volution I he sagittateform of the aperture, and the compressed general fornrof the shell. [The edge, ofthe periphery in this figure should be acute, instead of apparently slightly trun-cated . ] 1, c. A septum, natural size, from a larger specimen. Fig. 2. Scaphites Nicojxetii 13.~> 2, a. A peripheral and aperture view of a specimen consistiug of the inner volutions. 2, b. A side view of the same. Fig. 3. Scaphites Conradi, oar. intermedios 433 3, a. A per
Report of the United States Geological Survey of the territories . ,5. Another view of the same, showing by the section of the outer volution I he sagittateform of the aperture, and the compressed general fornrof the shell. [The edge, ofthe periphery in this figure should be acute, instead of apparently slightly trun-cated . ] 1, c. A septum, natural size, from a larger specimen. Fig. 2. Scaphites Nicojxetii 13.~> 2, a. A peripheral and aperture view of a specimen consistiug of the inner volutions. 2, b. A side view of the same. Fig. 3. Scaphites Conradi, oar. intermedios 433 3, a. A peripheral and aperture view of the type-specimen of this variety. 3, l>. A side view of same. .!, c. A septum of same, rragnifted to a little more than two diameters. Fig. 4. Scaphites Nicoixetii 135 1, a. A side view of a specimen retaining most of the outer volution. 1, 6. A peripheral and aperture view of same, the lip being partly restored. 4, c A septum of same, two and a half diameters. H,§.6ciiliiau\il^iinicu irRlican: , . I Fox Ihll^ beds 3 !?. PLATE 8 5. 1. Mandanensis 443 l,o. A side view of a nearly perfect specimen. 1,6. A peripheral and aperture view of same. 1,0. A septum of same, magnified two and a half to three 2. Scapiiites aiiyssinus 441 •2,«. A side view of a specimen, with portions of the matrix attached. 2, h. A septum, magnified two and a half to three diameters. Fig. 3. Scaphites Cheyennensis 437 3, a. A side view of a perfect internal ,5. A peripheral and aperture view of , e. A part of the inner volutions of the same. 3,rf. A fragment of the outer volution, containing one of those curious bodies usually calledan Aptichus, a part of one valve of which is broken away, so as to expose a jaw-likedifferent part of the same organ between the two valves. 3, c. A septum of this species, magnified to between two and a half and three diameters. :!, /. An under-side view of the jaw-like piece of the Apli
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherwashi, bookyear1876
