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  1. Bibliographic index of American Ordovician and Silurian fossils, by Ray S. Bassler.
    By: Bassler, Ray S.
    Publication info: Washington,Govt. Print. Off.,1915.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Bibliography  Ordovician  Paleontology  Silurian
    View record   View book
  2. The Bryozoa of the Lower Silurian in Minnesota,
    By: Ulrich, Edward Oscar,
    Publication info: Minneapolis,1893
    Contributed by: Cornell University Library
    Subjects: Bryozoa, Fossil  Minnesota  Ordovician  Paleontology
    View record   View book
  3. Cambrian and Ordovician / Maryland Geological Survey.
    By: Maryland Geological Survey. - Bassler, Ray S.
    Publication info: Baltimore :The Johns Hopkins press,1919.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Cambrian  Geology  Geology, Stratigraphic  Maryland  Ordovician  Paleontology
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  4. Catalogue of the fossils for the Cincinnati group, by Jos. F. James, custodian Cincinnati society of natural history. Published by order of Committee on palaeontology.
    By: James, Joseph F. - Cincinnati Society of Natural History.
    Publication info: Cincinnati,Printed by J. Barclay,1881.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    Subjects: Catalogs and collections  Fossils  Ordovician  Paleontology
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
    View record   View book
  5. Figures and descriptions of Canadian organic remains.
    By: Billings, E. - Hall, James, - Jones, T. Rupert - Salter, John William, - Thompson, John Vaughan, - Geological Survey of Canada.
    Publication info: Montreal :Printed by J. Lovell,1858-1865 (v. 1, 1859)
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    Subjects: Canada  Ordovician  Paléontologie  Paleontology  Silurian
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  6. The Lower Silurian Lamellibranchiata of Minnesota.
    By: Ulrich, Edward Oscar,
    Publication info: [Minneapolis]1894.
    Contributed by: Cornell University Library
    Subjects: Bivalves  Minnesota  Ordovician  Paleontology
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  7. The Lower Silurian Ostracoda of Minnesota. By E. O. Ulrich.
    By: Ulrich, Edward Oscar,
    Publication info: [Minneapolis]1894.
    Contributed by: Cornell University Library
    Subjects: Minnesota  Ordovician  Ostracoda  Paleontology
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  8. The Lower Siluric shales of the Mohawk valley, by Rudolf Ruedemann.
    By: Ruedemann, Rudolf,
    Publication info: Albany,University of the State of New York,1912.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Geology  Geology, Stratigraphic  Mohawk Valley  New York (State)  Ordovician  Paleontology
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  9. Morphology and arrangement of meromes in Ischadites dixonensis, an Ordovician Receptaculitid / Daniel C. Fisher -- and Matthew H. Nitecki --.
    By: Fisher, Daniel C. - Nitecki, Matthew H.
    Publication info: Chicago :Field Museum of Natural History,1978.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Illinois  Ischadites dixenensis  Ordovician  Paleobotany
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  10. New Archaeoscyphia (Porifera) from the Ordovician of Anticosti Island, Quebec / J. Keith Rigby -- and Matthew H. Nitecki --.
    By: Rigby, J. Keith. - Nitecki, Matthew H.,
    Publication info: [Chicago] :Field Museum of Natural History,1973.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Anticosti Island  Ordovician  Paleontology  Québec (Province)  Sponges, Fossil
    View record   View book
  11. New trilobites from the Maquoketa beds of Fayette county, Iowa / by Arthur Ware Slocom -- ; Oliver Cummings Farrington --
    By: Slocom, Arthur Ware, - Farrington, Oliver C. - Field Museum of Natural History.
    Publication info: Chicago :Field Museum of Natural History ,1913.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Fayette County  Iowa  Ordovician  Paleontology  Trilobites
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  12. North American cyclocrinitid algae / [by] Matthew H. Nitecki --
    By: Nitecki, Matthew H.
    Publication info: [Chicago]Field Museum of Natural History,1970.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Dasycladaceae, Fossil  North America  Ordovician  Paleontology  Silurian
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  13. North American Silurian receptaculitid algae / [by] Matthew H. Nitecki -- [Patricia M. Williams, -- editor --]
    By: Nitecki, Matthew H. - Williams, Patricia M.
    Publication info: Chicago :Field Museum Press ,1972.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Dasycladaceae, Fossil  North America  Ordovician  Paleontology  Silurian
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  14. Notes and descriptions of some new or hitherto unrecorded species of fossils from the Cambro-Silurian (Ordovician) rocks of the province of Quebec by Henry M. Ami.
    By: Ami, Henry Marc,
    Publication info: Montreal :s.n.,1892?
    Contributed by: Canadiana.org (archive.org)
    Subjects: Geology  Ordovician  Paleontology  Quebec (Province)
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  15. On the nature of the holotype of Nipterella paradoxica (Billings) / [by] Matthew H. Nitecki --
    By: Nitecki, Matthew H.
    Publication info: [Chicago] :Field Museum of Natural History,1968.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Mingan Islands  Nipterella paradoxica  Ordovician  Paleontology  Québec (Province)
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  16. Ordovician Batophoreae (Dasycladales) from Michigan / Matthew H. Nitecki --.
    By: Nitecki, Matthew H.
    Publication info: Chicago :Field Museum of Natural History,1976.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Archaeobatophora typa  Delta County  Michigan  Ordovician  Paleobotany
    View record   View book
  17. Ordovician fossils of north China,
    By: Grabau, Amadeus W.
    Publication info: Peking,Published by the Geological Survey of China,1922.
    Contributed by: Cornell University Library
    Subjects: China  Ordovician  Paleontology
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  18. Ordovician fossils of north China, by Amadeus W. Grabau, with plates I-IX and 20 text figures.
    By: Grabau, Amadeus W.
    Publication info: Peking :Published by the Geological Survey of China,1922.
    Contributed by: University of California Libraries (archive.org)
    Subjects: China  Ordovician  Paleontology
    View record   View book
  19. Ordovician Receptaculites camacho n. sp. from Argentina / Matthew H. Nitecki -- and Gerald G. Forney --.
    By: Nitecki, Matthew H. - Forney, Gerald Glenn. - Field Museum of Natural History.
    Publication info: Chicago :Field Museum of Natural History,1978.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Algae, Fossil  Argentina  Ordovician  Paleobotany
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  20. The Ordovician trilobite Pseudogygites Kobayashi in eastern and Arctic North America /
    By: Ludvigsen, Rolf. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1979.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: North America  Ordovician  Paleontology  Trilobites
    View record   View book
  21. Ordovician vertebrates from Western United States / Robert H. Denison --
    By: Denison, Robert H.
    Publication info: [Chicago] :Field Museum of Natural History,1967.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Ordovician  Paleontology  Vertebrates, Fossil  West (U.S.)
    View record   View book
  22. Organic buildups in the Lower Ordovician (Canadian) of Texas and Oklahoma / Donald Francis Toomey -- and Matthew H. Nitecki --.
    By: Toomey, Donald F. - Nitecki, Matthew H. - Field Museum of Natural History.
    Publication info: [Chicago] :Field Museum of Natural History,1979.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Algae, Fossil  Oklahoma  Ordovician  Paleontology  Sponges, Fossil  Texas
    View record   View book
  23. Phosphatic microfossils from the Ordovician of the United States / Matthew H. Nitecki --, Raymond C. Gutschick --, John E. Repetski --.
    By: Nitecki, Matthew H. - Gutschick, Raymond C. - Repetski, John E.,
    Publication info: Chicago :Field Museum of Natural History,1975.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Micropaleontology  Ordovician  Paleontology  Phosphates  United States
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  24. Preliminary studies of the ultrastructure of selected Ordovician conodonts /
    By: Barnes, Christopher R. - Monroe, E. A. - Sass, Daniel B. - Royal Ontario Museum.
    Publication info: [Toronto] :Royal Ontario Museum,1970.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Conodonts  Ordovician  Paleontology
    View record   View book
  25. Redescription of type specimens of bryozoan Stigmatella from the Upper Ordovician of the Toronto region, Ontario /
    By: Fritz, Madeleine A. - Royal Ontario Museum
    Publication info: [Toronto] :Royal Ontario Museum,1973.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Ontario  Ordovician  Paleontology  Stigmatella  Toronto Region
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  26. Redescription of type specimens of species of the bryozoan genera Monticulipora, Mesotrypa, Peronopora, and Prasopora, from the upper Ordovician rocks of Toronto and vicinity, Ontario, Canada /
    By: Fritz, Madeleine A. - Royal Ontario Museum.
    Publication info: [Toronto] :Royal Ontario Museum,1976.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Bryozoa, Fossil  Ontario  Ordovician  Paleontology  Toronto Region
    View record   View book
  27. Redescription of type specimens of species of the Bryozoan genera Atactoporella, Homoptrypa, and Homotrypella from the Upper Ordovician Rocks of the Credit River Valley, Ontario, Canada /
    By: Fritz, Madeleine A. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1977.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Bryozoa, Fossil  Credit River Valley  Ontario  Ordovician  Paleontology  Type specimens
    View record   View book
  28. Redescription of type specimens of species of the Bryozoan genera Dekayia, Homotrypa, and Stigmatella from Upper Ordovician rocks along Workman's Creek, Ontario /
    By: Fritz, Madeleine A. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1982.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Bryozoa, Fossil  Ontario  Ordovician  Paleontology  Workman's Creek
    View record   View book
  29. Redescription of type specimens of the Bryozoan Heterotrypa from Upper Ordovician Rocks of the Credit River Valley, Ontario, Canada /
    By: Fritz, Madeleine A. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1975.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Credit River Valley  Ontario  Ordovician  Paleontology
    View record   View book
  30. Revised phylogeny and functional interpretation of the Edrioasteroidea based on new taxa from the Early and Middle Ordovician of western Utah / Thomas E. Guensburg --, James Sprinkle --.
    By: Guensburg, Thomas Edgar. - Sprinkle, James, - Field Museum of Natural History.
    Publication info: Chicago, Ill. :Field Museum of Natural History,1994.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Classification  Echinodermata, Fossil  Edrioasteroidea  Ordovician  Paleontology  Utah
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  31. Stipatocrinus, a new and unusual camerate crinoid from the lower silurian of western New York /
    By: Eckert, James D., - Brett, Carlton E. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1987.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Crinoidea, Fossil  New York (State)  Ordovician  Paleontology
    View record   View book
  32. Stratigraphy and paleontology of the Credit River section, accompanied by seven plates, also insert entitled "Composite section of the rocks of the Credit River.
    By: Dyer, William Spafford, - Toronto, Ont.
    Publication info: [TorontoThe United Press][192-?]
    Contributed by: Gerstein - University of Toronto (archive.org)
    Subjects: Credit River  Ontario  Ordovician  Paleontology  Paleontology, Stratigraphic
    View record   View book
  33. Systematic ichnology of the Late Ordovician Georgian Bay formation of southern Ontario, eastern Canada /
    By: Stanley, D. Christopher A. - Pickerill, R. K. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,c1998.
    Contributed by: Royal Ontario Museum (archive.org)
    Subjects: Ichnology  Ontario, Southern  Ordovician  Paleontology  Trace fossils
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  34. Traces of the Ordovican [sic] system on the Atlantic coast and organic remains of Little River Group, no. IV
    By: Matthew, G. F.
    Publication info: Ottawa :J. Durie,1895.
    Contributed by: Canadiana.org (archive.org)
    Subjects: Insects, Fossil  Ordovician  Paleontology
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  35. The trilobites Bathyurus and Eomonorachus from the Middle Ordovician of Oklahoma and their biofacies significance /
    By: Ludvigsen, Rolf. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1978.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Oklahoma  Ordovician  Paleontology  Trilobites
    View record   View book
  36. The type species of the Ordovician trilobite genus Isotelus I. gigas Dekay, 1824 /
    By: Rudkin, David M., - Tripp, Ronald P. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1988.
    Contributed by: Royal Ontario Museum (archive.org)
    Subjects: New York (State)  Ontario  Ordovician  Paleontology  Trilobites
    View record   View book
  37. Upper Cambrian and Lower Ordovician trilobite biostratigraphy of the Rabbitkettle Formation, Western District of Mackenzie /
    By: Ludvigsen, Rolf. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1982.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Cambrian  Mackenzie District  Northwest Territories  Ordovician  Paleontology  Trilobites
    View record   View book
  38. Upper Cambrian to Lower Ordovician conodont biostratigraphy and biofacies, Rabbitkettle Formation, District of Mackenzie /
    By: Landing, Ed. - Ludvigsen, Rolf. - Von Bitter, Peter H. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1980.
    Contributed by: ROM - University of Toronto (archive.org)
    Subjects: Cambrian  Conodonts  Mackenzie District  Northwest Territories  Ordovician  Paleontology
    View record   View book
  39. The Upper Ordovician fauna of Frobisher bay, Baffin Land, by Sharat Kumar Roy.
    By: Roy, Sharat Kumar,
    Publication info: Chicago :Field Museum of Natural History,1941
    Contributed by: University of Illinois Urbana Champaign
    Subjects: (1927-1928)  Baffin Island  Frobisher Bay  Frobisher Bay (Bay)  Nunavut  Ordovician  Ordovicien  Paléontologie  Paleontology  Rawson-MacMillan Sub-Arctic Expedition  Rawson-MacMillan sub-Arctic expedition, 1927-1928  Territoires du Nord-Ouest
    View record   View book
  40. The upper Ordovician rocks of Kentucky and their bryozoa. By John M. Nickles. 1905.
    By: Nickles, John M.
    Publication info: Louisville [Ky.] :Printed by the Geo. G. Fetter company,1905.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Bryozoa, Fossil  Kentucky  Ordovician  Paleontology
    View record   View book
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