3 edition of Species of the genus Schwagerina and their stratigraphic significance found in the catalog.
Species of the genus Schwagerina and their stratigraphic significance
Joshua William Beede
|Statement||by J.W. Beede and Hedwig T. Kniker.|
|Series||University of Texas bulletin -- no. 2433: Sept. 1, 1924|
|Contributions||Knicker, Hedwig Thusnelda,|
|The Physical Object|
|Pagination||96 p., 1 l. ix pl., fold. map.|
|Number of Pages||96|
To return to the Russian section, the number of species in the Artinskian is still considerable. Möller cited only Fusulina verneuili and Schwagerina princeps, but Stuckenberg records Fusulina verneuili, F. cf. longissima, together with two undetermined species of the same genus, as well as Cribrostomum gracile and C. cf. commune. Difference between Genus and Species. All living organisms present on the earth are categorized into groups for easier understanding. Taxonomy is a branch of science which deals with the scientific categorization of organisms into separate groups based on the presence and absence of certain characteristics. The characteristics may be physical or genetic/5(7).
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Species of the Genus Schwagerina and their Stratigraphic Significance Paperback – September 1, by et al J. Beede (Author)Author: et al J. Beede. Species of the genus Schwagerina and their stratigraphic significance. Austin, Tex.: The University,  (OCoLC) Material Type: Government publication, State or province government publication: Document Type: Book: All Authors / Contributors: J W Beede; Hedwig Thusnelda Kniker.
BL Species of the Genus Schwagerina and Their Stratigraphic Significance, by J. Beede and H. Kniker. 96 p., 1 map, 9 plates, Price: $ Species of the Genus Schwagerina and Their Stratigraphic Significance.
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Beede. Species of the genus Schwagerina and their stratigraphic significance / (Austin, Tex.: The University, ), by J. Beede and Hedwig Thusnelda Kniker (page images at HathiTrust) Report on the valley regions of Alabama (Paleozoic strata) / (Montgomery, Ala.: J.P. Armstrong, printer; [etc.], ), by Geological Survey of Alabama and Henry McCalley (page images.
Their regular variability in time and space was established and due to that stratigraphic division of the studied sediments was carried out. 11 species of 3 foraminifer genera and 9 species. Abstract. In situ spores are described from Pennsylvanian-age sphenopsid cones.
Spores from cones referable to the plant Calamites have been shown to resemble the dispersed spore genera Elaterites, Vestispora, or Calamospora at different stages in spore ontogeny. Spores from some cones referable to the plant Sphenophyllum have ontogenetic stages resembling Vestispora Cited by: 8.
Although not abundant, Vestispora (Wilson and Hoffmeister) Wilson and Venkatachala is a stratigraphically important genus of Carboniferous miospores (e.g., Ravn, ). The morphology of Vestispora and Pteroretis Felix and Burbridge, the only similar genus, is unique among Carboniferous by: 1.
For more than 70 years, the base of the Permian was recognized globally by a fusulinid biostratigraphic datum, the first occurrence (FO, which operationalizes its FAD = first appearance datum) of “Schwagerina,” which to many.
authors meant the FO of the inflated schwagerinids (e.g., Beede and Kniker, ). In order to establish a refined biostratigraphic subdivision and correlation of the Uppermost Carboniferous/Lower Permian Sakmarian and Artinskian faunas reveal an increasing divergence in species and genus composition.
& Kniker, H. (): Species of the genusSchwagerina and their stratigraphic significance.—Univ. Texas Bull Cited by: Its characteristic fossils include the fusulinid genus Schwagerina, which first appears in the underlying Wolfcamp series, and does not extend into the overlying Guadalupe series.
With it are older species of Parafusulina, which are smaller and less highly developed than species of the same genus in the Guadalupe series above. A new genus Biwaella, Schwagerina-like Schubertella. Science Reports of the Saitama University, Urawa, Series B 3 (3) New species of Fusulinidae of the Subfamily Schubertellinae Skinner from the Carboniferous and Lower Permian of the Bashkirian Cis-Urals.
Longyan District of Fujian and their stratigraphic by: 6. Most of the new literature on the Foraminifera is recorded quarterly in the Contributions from this Laboratory, so that with the present bibliography it is possible for the worker to keep in contact with the literature on American Foraminifera.
Cushman Laboratory for Foraminiferal Research, Brook Road, Sharon, Mass., U. December, Möller (), believing the specimens he was studying were the same as Ehrenberg's B. princeps, selected Ehrenberg's species (and specimens) as the type of his new genus Schwagerina. Much later Dunbar and Skinner () restudied the type specimens of Ehrenberg's Borelis princeps and discovered they were significantly different from the highly inflated specimens.
Note: Many references were provided by P. Rodda, J. Casey and R. Girard in andand by in Numerous species were described by W. Wheeler, C. Brues, A. Melander and C.
McClendon in papers listed as “Contributions from the Zoological Laboratory of the Universityof Texas”. The stratigraphic significance of Pseudo-schwagerina was first discussed by Beede & Kniker () who pointed out that the first appearance of this genus coincided with the beginning of the Permian Period.
Subsequently, Dunbar & Skinner (), Kahler & Kahler (, etc.) and many others supported this view, contributing data on the geographic and. Angiosperm evolved and diversified during Cretaceous.
During this course of evolution and radiation, various pollen of uncertain origin had evolved. Aquilapollenites represents the early stock of angiosperms attaining its acme with respect to diversity and dominance during Campanian and Maastrichtian age.
It was globally present (except Antarctica) however more Author: Shreya Mishra, Shiva Prakash Kadukothanahalli Nagaraju, Mahi Bansal, Vandana Prasad. The genus Monodiexodina, which generally has remarkably elongated fusiform or subcylindrical shells with strongly and regularly fluted septa (Fig.
1, Fig. 2), was established by Sosnina (in Kiparisova et al., ) with Schwagerina wanneri var. sutchanica Dutkevich (in Likharev, ) as the type addition to this outstanding shell morphology that gives distinguishable Cited by: Species of the genus Schwagerina and their stratigraphic significance.
University of Texas, Bureau of Economic Geology and Technology Bulletin, Cited by: 9. # Beede J. W. and Kniker H. T. SPECIES OF THE GENUS SCHWAGERINA AND THEIR STRATIGRAPHIC SIGNIFICANCE wps with some surface removal from old tape strip, some wear, contents vg, 96 p., 1 map, 9 plts. A classic.
Price: $ (stock#UT).Stratigraphic distribution of species of the megaspore genus Minerisporites in North America: taxonomy, stratigraphic ranges, and facies significance of Minerisporites megaspores Author: Robert H Tschudy ; Geological Survey (U.S.).The Howe fusulinid assemblage is composed entirely of species of the genus Leptotriticites.
The species L. hughesensis. and L. glenensis were originally described from just beneath the new systemic boundary horizon in the Hughes Creek Shale Member and .