Show simple item record Utgaard, John Perry, Thomas G. 2006-08-04T19:40:52Z 2006-08-04T19:40:52Z 1960
dc.identifier.citation Perry, T. G., and Utgaard, J., 1960, Fenestrate bryozoans from the Glen Dean Limestone (Middle Chester) of southern Indiana: Indiana Geological Survey Bulletin 19, 32 p., 6 pls., 12 figs. en
dc.description Indiana Geological Survey Bulletin 19 en
dc.description.abstract Fenestrate bryozoans are particularly abundant in shale and argillaceous limestone beds in the upper part of the Glen Dean Limestone (middle Chester) of late Mississippian age In south-central Indiana. Several hundred specimens were obtained from two excellent collecting localities in Perry County and from one exposure in northwestern Crawford County. The collected specimens are assigned to the genera Fenestella Lonsdale, Lyroporella Simpson, and Polypora McCoy of the Family Fenestellidae King and to the genus Septopora Prout, a member of the Family Acanthocladiidae Zittel. Fenesteila is the most abundantly represented genus in our collections and includes five species, Fenestella burlingtonensis Ulrich, F. cestriensis Ulrich, F. exigua Ulrich, F. matheri Condra & Elias, and F. tenax Ulrich. Polypora is the next most abundant genus and is represented in the fauna by three species, Polypora corticosa Ulrich, P. multispinosa McFarlan, and P. nodolinearis McFarlan. Frequency-distribution diagrams showing number of branches and fenestrules in a 10-millimeter distance and number of zooecia and nodes in a 5millimeter distance have been prepared for each described species except Septopora cestriensis Prout; only one specimen of this species displays the obverse side of the frond. Such diagrams permit clearer differentiation of closely allied species in which ranges of one or more structural characters may overlap, and these diagrams present a more accurate understanding of each species. The Glen Dean fenestrate bryozoan fauna, exclusive of Archimedes Owen, which is not treated in this study, includes 11 species. Although fenestrate bryozoan faunas have been described in considerable detail from Glen Dean beds in Illinois and Kentucky, these faunal elements of the Glen Dean of Indiana hitherto have not received significant attention. en
dc.description.sponsorship Indiana Department of Conservation en
dc.format.extent 3073584 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Indiana Geological Survey en
dc.relation.ispartofseries Bulletin en
dc.relation.ispartofseries 19 en
dc.rights This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License. To view a copy of this license, visit or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA. en
dc.subject Paleontology en
dc.subject Bryozoa en
dc.subject Fossils en
dc.subject Cryptostomata en
dc.subject Fenestellidae en
dc.subject Glen Dean Limestone en
dc.subject Mississippian en
dc.subject South Central Indiana en
dc.title Fenestrate Bryozoans from the Glen Dean Limestone (Middle Chester) of Southern Indiana en
dc.type Technical Report en

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