The Correlation of Geological Faunas: A Contribution to Devonian Paleontology, Ausgaben 210-213U.S. Government Printing Office, 1903 - 147 Seiten |
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abundance Ambocœlia beds bionic value Brongn Carboniferous Catskill Cayuga Lake Character and extent Chemung Chemung formation Cherokee shales Chonetes classification Coal Measures conditions of environment correlation County Definition and synonymy Derbya Devonian Dickinson County dominant species eastern New York Edmondia Eighteenmile Creek equivalent evidence expressed fact feet flora Fort Scott fossil faunas fossiliferous zone fossils Fusulina Geological Survey Geologist Hamilton formation Haworth horizon Ithaca formation Jour Lacoe collection Lesquereux limestone lithological localities lower migration Museum E. H. Sellards Naticopsis National Museum E. H. Neuropteris Nucula occur Onaga Oneonta outcrop paleontology Pecopteris Permian Phacops rana Preliminary faunal list Prosser region reported Rept rocks Roy Lawrence sandstone sediments Seminula subtilita shales specimens speciosa fauna Spirifer disjunctus fauna statistics strata stratigraphical Surv synonymy Thayer thickness tion Tropidoleptus carinatus fauna Tropidoleptus fauna U. S. Geol U. S. National Museum Upper
Beliebte Passagen
Seite 68 - On the Fossil Faunas of the Upper Devonian, along the meridian of 76° 30', from Tompkins County, New York, to Bradford County, Pennsylvania, by Henry S.
Seite 48 - ... may now be named and distinguished. In the discussions that follow, the relation to these of other faunas, which may eventually be classified as distinct, will also be considered. THE STATISTICS AND THE PLAN OF DISCUSSION. After the publication of the classification set forth in the paper of 1886...
Seite 110 - No species in any way characteristic of the Lower Coal Measures or the Allegheny formation remains. On the other hand, the ferns, either as individual species or as phases of species having wide range, are clearly indicative of a stage at least very high in the Upper Carboniferous (Pennsylvanian). Nearly all the species have been reported from either the Permian of Europe or the Dunkard formation of the United States, though, with the possible exception of Pecopteris Newberriana, none are distinctly...
Seite 112 - University, but if the composition of the entire flora proves to be of so young a character as the material described or placed in my hands by Mr. Sellards, his conclusion that the beds are of so late date as the Lower Permian will appear to be fully justified. I am not informed whether any of the gymnospermic species so important in, and so typically characteristic of, the Permian of Europe or Prince Edward Island are present in Kansas. However, such pteridophytic material as has come to me for...
Seite 49 - Faunally he considers the Hamilton formation as including the deposits between the top of the Onondaga limestone and the base of the Tully limestone of central New York, which have generally been divided into the Marcellus shale and the Hamilton beds. He writes as follows : " Faunally, the series of sediments, as they are exhibited in central New York (beginning at the top of the Onondaga (Corniferous) limestone and terminating at the base of the Tully limestone), presents a continuity which leaves...
Seite 120 - Papers treat of a variety of subjects, and the total number issued is large. They have therefore been classified into the following series: A, Economic geology; B, Descriptive geology; C, Systematic geology and paleontology; D, Petrography and mineralogy; E, Chemistry and physics; F, Geography; G, Miscellaneous; H, Forestry; I, Irrigation; J, Water storage; K, Pumping water; L, Quality of water; M, Methods of hydrographic investigation; N, Water power; O, Underground waters; P, Hydrographic progress...
Seite 110 - Dnnkard formation, whose flora was fully treated by Professors Fontaine and IC White.* Yet the small flora from Onaga contains none of the special types or characteristic Permian forms which are present in the Dunkard, and on account of which the greater part of the Dunkard is regarded as Permian.
Seite 10 - ... one part (New York State) the faunal characters which the formations were found to exhibit were seen to be coincident with the stratigraphic to so great an extent that there was no reason to dissociate them under separate schemes; but since the whole area of the United States is being brought under careful examination, it is found that the close connection which these two classes of characters have in New York State is broken up and they begin to diverge gradually in various places and in different...
Seite 111 - Oiiaga flora may, therefore, be construed, so far as it represents the plants of its horizon, as indicating a stage probably within the Monongahela formation of the Appalachian region, or possibly as high as the lowest part of the Dunkard formation, although, with the exception of Pecopteris Newberriana, the collection in hand does not contain any species characteristic of the Permian of the Old World, and does not signify a Permian age for the Onaga (Elmdale) beds.
Seite 11 - ... is found that the close connection which these two classes of characters have in New York State is broken up and they begin to diverge gradually in various places and in different ways. The same experience is found, to a greater or less extent, as any local terms are extended from any of the states into those contiguous. This plainly shows that unless there be allowed great freedom to vary from the scheme adopted for stratigraphic designations, any nomenclature which the Committee or the International...