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Ptilodictyoid Cryptostomata Bryozoa from the Middle and Upper Ordovician Rocks of Central Kentucky

Published online by Cambridge University Press:  22 December 2017

Olgerts L. Karklins
Olgerts L. Karklins*
Affiliation:
U.S. Geological Survey, Washington, D.C. 20560
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Abstract

The High Bridge Group (Middle Ordovician), and the Lexington Limestone and Clays Ferry Formation (Middle and Upper Ordovician), of central Kentucky contain a diverse fossil invertebrate fauna, including cryptostome ptilodictyoids, the so-called “bifoliates,” as a distinctive element. The ptilodictyoid bryozoans there include nine species of six genera Escharopora, Graptodictya, Phyllodictya, Stictopora, Trigonodictya, and new genus Orectodictya in two families Ptilodictyidae and Rhinidictyidae. Three species are new: Escharopora eparmata, Trigonodictya cirrita, and Orectodictya pansa. Most of the species are closely related to ptilodictyoids occurring in the Middle Ordovician of New York and Minnesota. In Kentucky, Escharopora, Stictopora, and Trigonodictya occur in the oldest rocks exposed, and thus include the oldest bryozoans found in Kentucky. The stratigraphic distribution of ptilodictyoids in Kentucky reflects the disconformable contact between the Tyrone Limestone (High Bridge Group) and the overlying Lexington Limestone.

Type
Research Article
Information
Journal of Paleontology , Volume 57 , Issue S14: Paleontological Society Memoir 14. Ptilodictyoid Cryptostomata bryozoa from the Middle and Upper Ordovician rocks of central Kentucky , January 1983 , pp. 1 - 31
Copyright
Copyright © 1983, The Society of Economic 

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References

Astrova, G. G. and Morozova, I. P. 1956. K sistematike mshanok otryada Cryptostomata [Taxonomy of Bryozoa of the order Cryptostomata]. Akademiya Nauk SSSR, Doklady, N. Ser., 110:661–664.Google Scholar
Bassler, R. S. 1906. A study of the James types of Ordovician and Silurian Bryozoa. U.S. National Museum Proceedings, 30(1442):1–66.CrossRefGoogle Scholar
Bassler, R. S. 1909. The cement resources of Virginia west of the Blue Ridge. Virginia Geological Survey Bulletin 2-a, 309 p.Google Scholar
Bassler, R. S. 1911. The early Paleozoic Bryozoa of the Baltic provinces. U.S. National Museum Bulletin 77, 382 p.Google Scholar
Bassler, R. S. 1915 Bibliographic index of American Ordovician and Silurian fossils. U.S. National Museum Bulletin 92(1–2), 1521 p.Google Scholar
Bassler, R. S. 1953. Bryozoa, 253 p. In, Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Pt. G. Geological Society of America and University of Kansas Press, Lawrence, Kansas.Google Scholar
Bergström, S. M. and Sweet, W. C. 1966. Conodonts from the Lexington Limestone (Middle Ordovician) of Kentucky and its lateral equivalents in Ohio and Indiana. Bulletin of American Paleontology, 50(299):267–441.Google Scholar
Black, D. F. B., Cressman, E. R. and MacQuown, W. C. Jr. 1965. The Lexington Limestone (Middle Ordovician) of central Kentucky. U.S. Geological Survey Bulletin 1224-C, 29 p.Google Scholar
Black, D. F. B. and Cuppels, N. P. 1973. Strodes Creek Member (Upper Ordovician); a new map unit in the Lexington Limestone of north-central Kentucky. U.S. Geological Survey Bulletin 1372-C, 16 p.Google Scholar
Blake, D. M. 1975. The order Cryptostomata resurrected, p. 211–223, 3 pls. In, David, L. (ed.), Bryozoa 1974. Documents des Laboratoires de Geologie de la Faculte des Sciences de Lyon, Hors Serie 3 (Fasc. 1).Google Scholar
Boardman, R. S. 1971. Mode of growth and functional morphology of autozooids in some Recent and Paleozoic tubular Bryozoa. Smithsonian Contributions to Paleobiology, 8:1–51.CrossRefGoogle Scholar
Boardman, R. S. and Cheetham, A. H. 1973. Degrees of colony dominance in stenolaemate and gymnolaemate Bryozoa, p. 121–220, 40 text figs. In, Boardman, R. S., Cheetham, A. H. and Oliver, W. A. Jr. (eds.), Animal Colonies. Dowden, Hutchinson and Ross, Inc., Stroudsburg, Pa. Google Scholar
Boardman, R. S. and Utgaard, J. 1964. Modifications of study methods for Paleozoic Bryozoa. Journal of Paleontology, 38:(4)768–770.Google Scholar
Brown, G. D. Jr. 1965. Trepostomatous Bryozoa from the Logana and Jessamine Limestone (Middle Ordovician) of the Kentucky Bluegrass Region. Journal of Paleontology, 39(5):974–1006.Google Scholar
Cressman, E. R. 1973. Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky. U.S. Geological Survey Professional Paper 768: 1–61.Google Scholar
Cressman, E. R. and Noger, M. C. 1976. Tidal flat carbonate environments in the High Bridge (Middle Ordovician) of central Kentucky. Kentucky Geological Survey Report of Investigations, 18:1–15.Google Scholar
Hall, J. 1847. Organic remains of the lower division of the New York system. New York Natural History Survey, Pt. 6, Paleontology of New York, 1:xxiii + 338 p.Google Scholar
Hinds, R. W. 1970. Ordovician Bryozoa from the Pogonip Group of Millard County, Western Utah. Brigham Young University Geology Studies, 17, Pt. 1:19–40.Google Scholar
James, U. P. 1875. Catalogue of Lower Silurian Fossils of the Cincinnati Group, with descriptions of some new species of corals and Polyzoa. Cincinnati, 8 p.Google Scholar
James, U. P. 1878. Descriptions of newly discovered species of fossils from the Lower Silurian Formation, Cincinnati Group. The Paleontologist, 1:1–8.Google Scholar
James, U. P. 1881. Contributions to paleontology. Fossils of the Lower Silurian Formation. Ohio, Indiana and Kentucky. The Paleontologist, 5:33–44.Google Scholar
Karklins, O. L. 1969. The cryptostome Bryozoa from the Middle Ordovician Decorah Shale, Minnesota. Minnesota Geological Survey Special Publication Series, SP-6:1–121.Google Scholar
Karklins, O. L. 1981. Bryozoan biostratigraphy in Middle and Upper Ordovician rocks of Kentucky. Geological Society of America, Abstracts with Programs, 13(7):1–482.Google Scholar
McFarlan, A. C. 1931. The Ordovician fauna of Kentucky. In, Jillson, W. R. (ed.), Paleontology of Kentucky. Kentucky Geological Survey Reports, Ser. 6, 36:47–165.Google Scholar
McFarlan, A. C. 1943. Geology of Kentucky. University of Kentucky, Lexington, 531 p.Google Scholar
McFarlan, A. C. and Freeman, L. B. 1935. Rogers Gap and Fulton Formations in central Kentucky. Geological Society of America Bulletin, 46:1975–2006.CrossRefGoogle Scholar
McFarlan, A. C. and White, W. H. 1948. Trenton and pre-Trenton of Kentucky. American Association of Petroleum Geologists Bulletin, 32(8):1627–1646.Google Scholar
Miller, A. M. 1925. Geology of Woodford County. Kentucky Geological Survey Reports, Ser. 6, 21:119–144.Google Scholar
Nickles, J. M. 1905. The Upper Ordovician rocks of Kentucky and their Bryozoa. Kentucky Geological Survey Bulletin, 5:1–64.Google Scholar
Nye, O. B. Jr., Dean, D. A. and Hinds, R. W. 1972. Improved thin section techniques for fossil and Recent organisms. Journal of Paleontology, 46(2):271–275.Google Scholar
d'Orbigny, A. D. 1849. Description de quelques genres nouveaux mollusques bryozoaires. Revue et Magasin de Zoologie, Ser. 2, 1:499–504.Google Scholar
Phillips, J. R. P. 1960. Restudy of types of seven Ordovician bifoliate Bryozoa. Palaeontology, 3: 1–25.Google Scholar
Pojeta, J. Jr. 1979. The Ordovician paleontology of Kentucky and nearby States—introduction. U.S. Geological Survey Professional Paper 1066-A, 48 p.CrossRefGoogle Scholar
Ross, J. P. 1964. Champlainian cryptostome Bryozoa from New York State. Journal of Paleontology, 38(1):1–32.Google Scholar
Ross, J. P. 1970. Distribution, paleoecology and correlation of Champlainian Ectoprocta (Bryozoa), New York State, Pt. III. Journal of Paleontology, 44(2):346–382.Google Scholar
Sweet, W. C. 1979. Conodonts and conodont biostratigraphy of post-Tyrone Ordovician rocks of the Cincinnati region. U.S. Geological Survey Professional Paper 1066-G, 25 p.Google Scholar
Sweet, W. C. and Bergström, S. M. 1971. The American Upper Ordovician Standard. A revised time-stratigraphic classification of North American upper Middle and Upper Ordovician rocks. Geological Society of America Bulletin, 82:613–628.CrossRefGoogle Scholar
Sweet, W. C. and Bergström, S. M. 1976. Conodont biostratigraphy of the Middle and Upper Ordovician of the United States midcontinent, p. 121–151. In, Bassett, M. G. (ed.), The Ordovician System: Proceedings of a Palaeontological Association Symposium, Birmingham, September 1974. University of Wales Press and National Museum of Wales, Cardiff, 696 p. Google Scholar
Ulrich, E. O. 1878. Descriptions of some new species of fossils, from the Cincinnati Group. Cincinnati Society Natural History Journal, 1:91–100.Google Scholar
Ulrich, E. O. 1882. American Paleozoic Bryozoa. Cincinnati Society Natural History Journal, 5:121–175.Google Scholar
Ulrich, E. O. 1886. Report on the Lower Silurian Bryozoa with preliminary descriptions of some of the new species. Minnesota Geological and Natural History Survey, Annual Report 14:57–103.Google Scholar
Ulrich, E. O. 1893. On Lower Silurian Bryozoa of Minnesota. Minnesota Geological and Natural History Survey Final Report 3, Pt. 1:96–331. (Author's separate, 1893; volume published 1895.)Google Scholar
Utgaard, J. 1973. Mode of colony growth, autozooids, and polymorphism in the bryozoan order Cystoporata, p. 317–360. In, Boardman, R. S., Cheetham, A. H. and Oliver, W. A. Jr. (eds.), Animal Colonies. Dowden, Hutchinson and Ross, Stroudsburg, Pa. Google Scholar
Vine, G. R. 1884. Fourth report of the committee, consisting of Dr. H. C. Sorby and Mr. G. R. Vine, appointed for the purpose of reporting on fossil Polyzoa: British Association Advancement of Science Report 53d Meeting (Southport, 1883), p. 161–209.Google Scholar
Weir, G. W. and Greene, R. C. 1965. Clays Ferry Formation (Ordovician)—a new map unit in south-central Kentucky. U.S. Geological Survey Bulletin 1224-B, 18 p.Google Scholar
Whaley, P. W. 1973. Relation of organic activity to early diagenetic changes in the Tyrone Limestone of Kentucky. Kentucky Academy of Science Transactions, 34:1–4.Google Scholar
Zittel, K. A. 1880. Molluscoidea; Bryozoa, p. 575–641. In, Handbuch der Palaeontologie. Druck und Verlag von R. Oldenbourg, München und Leipzig, 765 p. CrossRefGoogle Scholar