File:Annual report of the United States Geological Survey to the Secretary of the Interior (1898) (14779532881).jpg

Identifier: annualreportofu2021geol_2 (find matches)
Title: Annual report of the United States Geological Survey to the Secretary of the Interior
Year: 1880 (1880s)
Authors: Geological Survey (U.S.)
Subjects: Geological Survey (U.S.) Geology Water-supply Forest reserves Mines and mineral resources
Publisher: Washington : G.P.O.
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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go 291. 3. A large, nearly perfect specimen, figured by White, the original of his figures 2a, 2b, pi. 36 (Twelfth Ann. Rept. U. S. Geol. and Geog.Surv. Terr., 1883, p. 133). This specimen is of the type of 1 of thisplate, though much larger.3a. Dorsal view, after White. 3b. Side view of same, after White. This drawing shows the lateral angu-lation mentioned by Meek. (See also lc, le, 2b, 2c, 2d, etc.) 3c. Posterior view of same, showing the broad, undefined ventral sinus,and the lateral angulation of the same valve. ?>il. Anterior view of same, showing high fold and sinus.Ouray limestone; Station 48. 4. A very large though imperfect specimen; one of the types figured by White (1. c, pi. 33, figs. 4a, 4b). This gibbous specimen is of thesame type as that shown by fig. 1 of this plate, though much larger. 4.. Ventral view, after White. 4/;. Dorsal view of same. 4c. Side view of same. Ouray limestone; Station 48. 78 ■ U. S. GEOLOGICAL SURVEY TWENTIETH ANNUAL REPORT. PART II. PL. VI
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FOSSILS FROM THE OURAY LIMESTONE THE MERIDEN GRAVUS6 CO- LlBRAnr OF THE UNIVERSITY of ILLINOIS. PLATE VII. 79 » F L A T E V I I Camarotocchia EndliCHJ 1. A small example of the type of tig. 1, PI. VI.hi. Dorsal view, showing undefined fold. 1//. Ventral view, showing broad, undefined sinus. lc. Side view, in which the lateral angulation of the ventral valve is well exhibited. Id. Posterior view, showing the broad, though ill-defined, fold and sinus and the lateral angulation of the ventral valve,le. Anterior view showing the character of the fold and sinus. These are seen to be marked by a few strong ribs, the more lateral plications in this, and also in other individuals, manifesting a marked tendency toward obsolescence.Ouray limestone; Durango 294. Ca MA ROT03CHIA CONTRACT A? 2. A small but characteristic specimen, and the best preserved which has come under my observation. Much larger shells of the samespecies occur in the collection, but their poor preservation rendersthem unlit

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