Report of the United States Geological Survey of the territories . 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-
Report of the United States Geological Survey of the territories . 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 Aplijchus, seen between the two valves ofthe same in fig. 3, il. 3, ;/• A side view of the same piece. 3,/l. An upper view of the same. 3, i. The Aptjjcliua, represented as it, would appear with the two valves opened otitrupon tinsame plane; one of the valves being represented merely in outline to show theposition of the third jaw-like piece between ; also represented in outline. 11 f.^kjjluJgkatiai! i ities. fox lhll> lints I II,.VIM. .. It Sinclair A Ffcfla PLATE 3 6. Pago. Fig. 1. Scapihtes Conkadi, var. gui^osus i:j^i A side view of a perfect specimen of this variety. Fig. J. Scapihtes Conradi 430 2, a. A peripheral and aperture view of au imperfect internal cast, consisting of septate volu-tions only of the typical , 6. A side view of same. -, c. A smaller imperfect specimen of same, side ,d. A different view of , e. A side view of an unusually large specimen. 2,f. A septum from the specimen represented by fig. 2, « and //, magnified to one and three-quarter diameters. If >$, CStabflitnl fwnicu eiftljc Cc I
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherwashi, bookyear1876
