Bulletin of the United States Geological and Geographical Survey of the Territories, Volume 4, Issue 4U.S. Government Printing Office, 1878 - Geological surveys |
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Common terms and phrases
abdomen Acad æstuans Alston apex appears arches August basal Base of Rocky border breadth broad Bull Carex Catostomus teres caudal conglomerate Cope Coregonus costal Cretaceous deposits Dorsal fin Elliott Coues elytra elytron erosion Esox fauna femora Fishes Brit Fishes N. A. forms Fort Buford Frenchman's Creek genus GIRARD Gray Green River grinding surface GÜNTHER head hind Hist Hook hypopyrrhus Ictalurus JORDAN & COPELAND Journ July Laramie Group Laramie period lateral line latipinnis Length of body Macroxus margin material Milk River Missouri River monuments Mouse River namaycush nearly Nutt Pembina Phila portions posterior prairie Proc products of erosion Pursh referred region Richardson rocks Rocky Mountains Salmo sandstones Sciurus Scudd scutellum shales single specimen slender species strata striæ Surv tapering Teeth tegmina Terr Tertiary thorax tibiæ trachytic transverse vein Turtle Mountain types U. S. Geol ventrals Vert walls wing Zoöl
Popular passages
Page 777 - Report on the Collection of Fishes Made by Dr. Elliott Coues, USA , in Dakota and Montana, During the Seasons of 1873 and 1874.
Page 791 - Eye large, near the middle of the side of the head, its diameter contained 2£ to 2J times in the length of the head, about equal to the width of the interorbital space. Scales large, their exposed surfaces higher than long, in about 30 (29 to 32) longitudinal and 7 vertical series; humeral scale like the others. Fins large, especially in the males...
Page 874 - D'Orbigny) of Europe." (Ferd. Roemer. Kreid. von Texas, p. 25.) fit is a well known fact that we have in North America no strata, which are, according to the European standards, equivalent with the Lower Cretaceous of Europe, but that all North American strata of the cretaceous period are equivalent with those of the Upper Cretaceous of that part of the world.
Page 865 - Some of the known portions of this great group doubtless represent different stages of the Laramie period, but the members just designated are, as a rule, understood to represent different geographical developments of its strata with modifications of its fauna rather than separate successive epochs of time in the geological period which is represented by the whole great group. The proof of the identity of these widely separated portions of the Laramie group consists in the recognition of various...
Page 751 - I have examined in that the third longitudinal vein arises from the first before the middle of the wing, instead of from the second longitudinal vein after its emission from the first; the first longitudinal vein has therefore...
Page 792 - H. selenops are, therefore, geographical races or varieties which have become so strongly differentiated from the common type that we are able to characterize them as species : *. Dorsal fin reduced, and with only about nine fully developed rays; abdomen sharply carinated (Elaltonigtiun) : 1.
Page 789 - Dorsal fin with a strong spine, composed of two, the posterior received into a longitudinal groove of the anterior. Inner border of the ventral fins adherent to the body. Dorsal fin inserted behind the ventrals.
Page 791 - C. chlora Jordan. Body slender, compressed. Head rather small. Eye large, about 3 in head, longer than snout. Mouth rather small, quite oblique, the lower jaw included when the mouth is closed, the maxillary scarcely reaching the front of orbit. Scales very large, about 12 in front of the dorsal fin ; the body entirely scaly except the thoracic region.
Page 865 - A.: with which are incorporated those collected in the same region at the same times by Mr. George M. Dawson, by Prof. JW Chickering, pp. 801-830. Art. XXXV. On some striking products of erosion in Colorado, by FM Endlich, 8. ND, pp.