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Ordovician trilobites from the Romaine and Mingan formations (Ibexian-late Whiterockian), Mingan Islands, Quebec

Published online by Cambridge University Press:  14 July 2015

Frederick C. Shaw  and
Thomas E. Bolton
Frederick C. Shaw
Affiliation:
Department of Environmental, Geographical and Geological Sciences, Lehman College and the Graduate Center, City University of New York, Bronx, NY 10468, USA, and Geological Survey of Canada (deceased)
Thomas E. Bolton
Affiliation:
Department of Environmental, Geographical and Geological Sciences, Lehman College and the Graduate Center, City University of New York, Bronx, NY 10468, USA, and Geological Survey of Canada (deceased)
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Abstract

The Romaine Formation of the Mingan Islands, Québec, contains a limited trilobite fauna of five genera (Bolbocephalus, Peltabellia, Petigurus, Strigigenalis, Strotactinus) with Lower Ordovician Ibexian (Floian) affinity, succeeded by two genera (Acidiphorus, Pseudomera) of early Middle Ordovician Whiterockian (Dapingian) affinity. Trilobites of later Whiterockian (Darriwillian) affinity are more abundant in the overlying Mingan Formation, with 29 genera (Amphilichas, Bathyurus, Calyptaulax, Ceraurinella, Cybeloides, Dolichoharpes, Encrinuroides, Eobronteus, Eorobergia, Failleana, Glaphurina, Glaphurus, Hibbertia, Hyboaspis, Illaenus, Isotelus, Kawina, Nieskowskia, Phorocephala, Pandaspinapyga, Pliomerops, Remopleurides, Sphaerexochus [including S. valcourensis n. sp.], Sphaerocoryphe, Stenopareia, Thaleops, Thulincola, Uromystrum, and Vogdesia). Lectotypes are selected for Mingan species of Illaenus, Peltabellia, Petigurus, Sphaerexochus, Stenopareia, and Thaleops. A number of genera form biofacies which can be related to lithofacies. Taken together with Chazy Group and Northwest Territories trilobite faunas, Mingan trilobites provide critical information on late Whiterockian trilobite distributions in Laurentia in far more detail than seen in the stratotype area of Nevada.

Type
Research Article
Information
Journal of Paleontology , Volume 85 , Issue 3 , May 2011 , pp. 406 - 441
Copyright
Copyright © The Paleontological Society 

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References

Adrain, J. M. and Westrop, S.R. 2005. Lower Ordovician trilobites from the Baumann Fiord Formation, Ellesmere Island, Arctic Canada. Canadian Journal of Earth Sciences, 42:1523–1546.CrossRefGoogle Scholar
Amati, L. and Westrop, S. R. 2004. A systematic revision of Thaleops (Trilobita: Illaenidae) with new species from the Middle and Late Ordovician of Oklahoma and New York. Journal of Systematic Palaeontology, 2:207–256.Google Scholar
Angelin, N. P. 1854. Palaeontologia Scandinavica. Pars 1. Crustacea Formationis Transitionis, fasc. 2, Palaeontologia Scandinavica. Academiae Regiae Scientarum Suecanae: Holmiae:21–92.Google Scholar
Barton, D. C. 1915. A revision of the Cheirurinae, with notes on their evolution. Washington University Studies, Scientific Series, 3:101–152.Google Scholar
Bergström, S. M. 1990. Biostratigraphic and biogeographic significance of Middle and Upper Ordovician conodonts in the Girvan succession, south-west Scotland. Courier Forschungsinstitut Senckenberg, 118:1–43.Google Scholar
Beyrich, E. 1845. Ueber einige böhmische Trilobiten. Berlin, 47 p.Google Scholar
Billings, E. 1859a. Fossils of the Calciferous Sandrock, including those of a deposit of white limestone at Mingan, supposed to belong to the formation. Canadian Naturalist and Geologist, 4:345–367.Google Scholar
Billings, E. 1859b. Descriptions of some new species of Trilobites from the Lower and Middle Silurian rocks of Canada. Canadian Naturalist and Geologist, 4:367–383.Google Scholar
Billings, E. 1859c. Fossils of the Chazy limestone, with descriptions of new species. Canadian Naturalist and Geologist, 4:426–470.Google Scholar
Billings, E. 1865. Palaeozoic Fossils, vol. I. Containing descriptions and figures of new or little known species of organic remains from the Silurian rocks. Geological Survey of Canada, (1861-1865), 426 p.Google Scholar
Bolton, T. E. and Cuffey, R. J. 2005. Bryozoa of the Romaine and Mingan formations (Lower and Middle Ordovician) of the Mingan Islands, Québec, Canada, p. 25–41. In Moyano, et al. (eds.), 2004, Bryozoan Studies. Taylor and Francis, London.Google Scholar
Bradley, J. H. 1925. Trilobites of the Beekmantown in the Phillipsburg region of Quebec. Canadian Field Naturalist, 39:5–9.Google Scholar
Brett, K. D. and Westrop, S. R. 1996. Trilobites of the Lower Ordovician (Ibexian) Fort Cassin Formation, Champlain Valley region, New York State and Vermont. Journal of Paleontology, 70:408–427.Google Scholar
Boyce, W. D. 1989. Early Ordovician trilobite faunas of the Boat Harbour and Catoche formations (St. George Group) in the Boat Harbour–Cape Norman area, Great Northern Peninsula, western Newfoundland. Newfoundland Department of Mines and Energy, Report 89-2, 95 p.Google Scholar
Burmeister, H. 1843. Die Organisation der Trilobiten, aus ihren lebenden Verwandten entwickelt, nebst einer systematischen Übersicht aller seither beschreibenen Arten. Berlin, 147 p.CrossRefGoogle Scholar
Chatterton, B. D. E. 1980. Ontogenetic studies of Middle Ordovician trilobites from the Esbataottine Formation, Mackenzie Mountains, Canada. Palaeontographica, Abteilung A, 171:1–74.Google Scholar
Chatterton, B. D. E. and Campbell, K. S. 1980. Silurian trilobites from near Canberra and some related forms from Yass Basin. Palaeontographica, Abteilung A, 167:77–112.Google Scholar
Chatterton, B. D. E. and Ludvigsen, R. 1976. Silicified Middle Ordovician trilobites from the South Nahanni River area, District of Mackenzie, Canada. Palaeontographica, Abteilung A, 154:1–106.Google Scholar
Chatterton, B. D. E. and Ludvigsen, R. 2004. Early Silurian trilobites of Anticosti Island, Québec, Canada. Palaeontographica Canadiana, 22, 264 p.Google Scholar
Clark, T. H. 1972. Montréal area. Québec Ministère des Richesses Naturelles, Geological Report 152, 234 p.Google Scholar
Conrad, T. A. 1843. Observations on the lead bearing limestone of Wisconsin and description of a new genus of trilobite and fifteen new Silurian fossils. Proceedings of the Academy of Natural Sciences of Philadelphia, 1:329–335.Google Scholar
Cooper, B. N. 1953. Trilobites from the lower Champlainian formations of the Appalachian Valley. Geological Society of America Memoir 55, 43 p.Google Scholar
Cooper, G. A. 1930. Upper Ordovician and Lower Devonian stratigraphy and paleontology of Percé, Quebec. New species from the Upper Ordovician of Percé. American Journal of Science, 20:265–288, 365–392.Google Scholar
Dalman, J. W. 1827. On Palaeaderna eller de så kallade Trilobiterna. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 1826:113–162, 226-294.Google Scholar
Dean, W. T. 1971. The trilobites of the Chair of Kildare limestone (Upper Ordovician) of eastern Ireland, part I; Palaeontographical Society of London Monographs, 125:1–60.Google Scholar
Dekay, J. E. 1824. Observations on the structure of trilobites and description of an apparently new genus Isotelus. Lyceum of Natural History, New York. Annals, 1:174–189.Google Scholar
Demott, L. L. 1963. Middle Ordovician trilobites of the Upper Mississippi Valley. Unpublished , Harvard University, 236 p.Google Scholar
Demott, L. L. 1987. Platteville and Decorah trilobites from Illinois and Wisconsin. Minnesota Geological Survey Report of Investigations, 35:63–98.Google Scholar
Desbiens, S., Bolton, T. E. and McCracken, A. D. 1996. Fauna of the lower Beauharnois Formation (Beekmantown Group, Lower Ordovician), Grande-Île, Québec Canadian Journal of Earth Sciences, 33:1132–1153.Google Scholar
Desrochers, A. 1988. Stratigraphie de l'Ordovicien de la région de l'archipel de Mingan; Québec Ministère de l'Énergie et des Ressources, MM 87-01, 70 p.Google Scholar
Desrochers, A. and James, N. P. 1988. Early Paleozoic surface and subsurface paleokarst: Middle Ordovician carbonates, Mingan Islands, Québec, p. 183–210. In James, N. P. and Choquette, P. W. (eds.), Paleokarst. Springer-Verlag, New York.Google Scholar
Desrochers, A. and James, N. P. 1989. Middle Ordovician (Chazyan) bioherms and biostromes of the Mingan Islands, Québec. In Geldsetzer, H. H., James, N. P., and Tebbut, G. E. (eds.), Reefs, Canada and adjacent areas. Canadian Society Petroleum Geologists Memoir 13:183–191.Google Scholar
Edgecombe, G. D. and Chatterton, B. D. E. 1990. Systematics of Encrinuroides and Curriella, with a new Early Silurian encrinurine from the Mackenzie Mountains. Canadian Journal of Earth Sciences, 27:820–833.Google Scholar
Edgecombe, G. D., Chatterton, B. D. E., Vaccari, N. E., and Waisfeld, B. G. Ordovician cheirurid trilobites from the Argentine Precordillera. Journal of Paleontology, 73:1155–1175.Google Scholar
Esker, G. C. 1961. A new species of trilobite from the Kimmswick Limestone (Ordovician) of Missouri. Journal of Paleontology, 35:1241–1243.Google Scholar
Esker, G. C. and Levin, H. 1964. Pandaspinapyga, a new trilobite from the Kimmswick Limestone of Missouri. Journal of Paleontology, 38:776–778.Google Scholar
Evitt, W. R. and Tripp, R. P. 1977. Silicified Middle Ordovician trilobites from the families Encrinuridae and Staurocephalidae. Palaeontographica, Abteilung. A, 157:109–174.Google Scholar
Fortey, R. A. 1979. Early Ordovician trilobites from the Catoche Formation (St. George Group), western Newfoundland. Geological Survey of Canada Bulletin, 321:61–114.Google Scholar
Fortey, R. A. 1983. Cambro-Ordovician trilobites from boundary beds in western Newfoundland and their phylogenetic significance. Palaeontological Association, Special Papers in Palaeontology, 30:179–211.Google Scholar
Fortey, R. A. and Droser, M. L. 1996. Trilobites at the base of the Middle Ordovician, western United States. Journal of Paleontology, 70:73–99.Google Scholar
Fortey, R. A. and Peel, J. S. 1990. Early Ordovician trilobites and molluscs from the Poulsen Cliff Formation, Washington Land, western North Greenland. Bulletin of the Geological Society of Denmark, 38:11–32.Google Scholar
Fortey, R. A. and Shergold, J. H. 1984. Early Ordovician trilobites, Nora Formation, Central Australia. Palaeontology, 27:315–366.Google Scholar
Hall, James. 1847. Paleontology of New York, vol. 1. Albany, New York, p. 1–338.Google Scholar
Hammann, W. 1992. The Ordovician trilobites from the Iberian Chains in the province of Aragon, NE-Spain, part 1. Beringeria, Heft 6:1–218.Google Scholar
Hammann, W. and Leone, F. 1997. Trilobites of the post-Sardic sequence of southern Sardinia. Beringeria, 20:1–217.Google Scholar
Harrington, H. J. 1957. Notes on new genera of Pliomeridae (Trilobita). Journal of Paleontology, 31:811–812.Google Scholar
Harris, A. G., Bergström, S. M., Ethington, R. L., and Ross, R. J. 1978. Aspects of Middle and Upper Ordovician conodont biostratigraphy of carbonate facies in Nevada and southeast California and comparison with some Appalachian successions. Brigham Young University Geology Studies, 26:7–33.Google Scholar
Hawle, I. and Corda, A. J. C. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen der Königlichen Böhmischen Gesellschaft der Wissenschaften, 5:117–292.Google Scholar
Hintze, L. F. 1952. Lower Ordovician trilobites from western Utah and eastern Nevada. Utah Geological and Mineralogical Survey Bulletin 48, 249 p.Google Scholar
Holliday, S. 1942. Ordovician trilobites from Nevada. Journal of Paleontology, 16:471–478.Google Scholar
Holm, G. and Schmidt, F. 1886. Revision der ostbaltischen silurischen Trilobiten. Abtheilung III. Die ostbaltischen Illaeniden. Mémoires de l'Academie Impériale des Sciences de St.– Petersbourg, series 7, 33:173 p.Google Scholar
Hunda, B. R., Chatterton, B. D. E., and Ludvigsen, R. 2003. Silicified Late Ordovician trilobites from the Mackenzie Mountains, Northwest Territories, Canada. Palaeontographica Canadiana 21, 87 p.Google Scholar
Hupé, P. 1953. Classification des trilobites. Annales Paléontologie, 39:61–168.Google Scholar
Jaanusson, V. 1954. Zur Morphologie und Taxonomie der Illaeniden. Arkiv für Mineralogi och Geologi, 1:545–583.Google Scholar
Jones, T. R. and Woodward, H. 1898. A monograph of the British Palaeozoic Phyllopoda. Palaeontological Society Monograph, 31 p.Google Scholar
Kaesler, R. (ed.). 1997. Treatise on Invertebrate Paleontology, Part O, Arthropoda 1 (revised). Geological Society America, Boulder and University of Kansas Press, Lawrence, 531 p.Google Scholar
Kjerulf, T. 1865. Veiviser ved geologiske Excursioner i Christiania Omegn. Universitets-program sem 2:43.Google Scholar
Kolobova, I. M. 1978. Trilobites, p. 126–144. In The Ordovician and Silurian beds of the Altai-Sayan Province and Tian' - Shan'. Academy of Sciences of the USSR, Siberian Branch, Institute of Geology and Geophysics, Transactions, 397: 126–144. (In Russian).Google Scholar
Kolobova, I. M. 1983. Some Ordovician trilobites of East Kazakhstan. Yearbook of the All-Union Paleontological Society, 26:248–259. (In Russian).Google Scholar
Lane, P. D. 1971. British Cheiruridea (Trilobita). Palaeontographical Society of London Monographs, 1971, 95 p.Google Scholar
Lavoie, D., Chi, G., Brennan-Alpert, P., Desrochers, A., and Bertrand, R. 2005. Hydrothermal dolomitization in the Lower Ordovician Romaine Formation of the Anticosti Basin: significance for hydrocarbon exploration. Bulletin of Canadian Petroleum Geology, 53: 454–172.Google Scholar
Lespérance, P. J. and Desbiens, S. 1995. Selected Ordovician trilobites from the Lake St. John district of Québec and their bearing on systematics. Paleontological Society Memoir 42, 19 p.Google Scholar
Lespérance, P. J. and Weissenberger, J. A. W. 1998. Trilobites of the Pabos Formation (Ashgillian, Upper Ordovician) Percé area, Québec. Journal of Paleontology, 72:303–316.Google Scholar
Logan, W. E. 1863. Report on the Geology of Canada. Geological Survey of Canada, Report of Progress 1863, 983 p.Google Scholar
Lu, Y., Zhang, W., Zhu, Z., Qian, Y., and Xiang, L. 1965. Fossils of each group in China: Chinese trilobites. Science Press, Beijing:766 p. (In Chinese and English).Google Scholar
Ludvigsen, R. 1978a. The trilobites Bathyurus and Eomonorachus from the Middle Ordovician of Oklahoma and their biofacies significance. Royal Ontario Museum Life Science Contributions 114, 18 p.Google Scholar
Ludvigsen, R. 1978b. Towards an Ordovician trilobite biostratigraphy of southern Ontario. Michigan Basin Geological Society Special Papers, 3:73–84.Google Scholar
Ludvigsen, R. 1979a. A trilobite zonation of Middle Ordovician rocks, southwestern District of Mackenzie. Geological Survey of Canada Bulletin 312, 55 p.Google Scholar
Ludvigsen, R. 1979b. Lower Ordovician trilobites of the Oxford Formation, eastern Ontario Canadian. Journal of Earth Sciences, 16:859–865.Google Scholar
Ludvigsen, R. and Chatterton, B. D. E. 1980. The ontogeny of Failleana and the origin of the Bumastinae (Trilobita). Geological Magazine, 117:471–478.Google Scholar
Ludvigsen, R. and Chatterton, B. D. E. 1982. Ordovician Pterygometopidae (Trilobita) of North America. Canadian Journal of Earth Sciences, 19:2179–2296.Google Scholar
Marek, L. 1952. Přispēvek ke stratigrafii a faunē nejvyšší části břidlic králodvorskńch. Sborník Ústředního Ústavu Geologického, 19:429–455.Google Scholar
Moore, R.C., (ed.) 1959. Treatise on Invertebrate Paleontology: Part O, Arthropoda 1. Geological Society of America and University of Kansas Press, Lawrence, 560 p.Google Scholar
Nikolaisen, F. 1991. The Ordovician trilobite Robergia Wiman, 1905 and some other species hitherto included. Norsk Geologisk Tidsskrift, 71:37–62.Google Scholar
Nowlan, G. S. 1981. Stratigraphy and conodont faunas of the Lower and Middle Ordovician Romaine and Mingan formations, Mingan Islands, Québec. (abstract) Maritime Sediments and Atlantic Geology, 17:67.Google Scholar
Owen, A. W. and Bruton, D. L. 1980. Late Caradoc–early Ashgill trilobites of the central Oslo region, Norway. University of Oslo Paleontological Contributions, 245, Paleontologisk Museum, Oslo, 63 p.Google Scholar
Owen, A. W. and Clarkson, E. N. K. 1992. Trilobites from Kilbucho and Wallace's Cast and the location of the Northern Belt of the Southern Uplands during the Late Ordovician. Scottish Journal Geology, 28:3–17.Google Scholar
Poole, F. G., Stewart, J. H., Berry, W. B. N., Harris, A. G., Repetsky, J. E., Madrid, R. J., Ketner, K. B., Carter, C., and Morales-Ramirez, J. M. 1995. Ordovician ocean-basin rocks of Sonora, Mexico, p. 277–289. In Ordovician Odyssey, 7th Symposium on the Ordovician System, Las Vegas. Pacific Section of SEPM, Fullerton, CA.Google Scholar
Portlock, J. E. 1843. Report on the geology of the County of Londonderry and of parts of Tyrone and Fermanagh. Geological Survey, Dublin and London, 784 p.Google Scholar
Přibyl, A. and Vanēk, J. 1986. A study of the morphology and phylogeny of the Family Harpetidae Hawle and Corda, 1847 (Trilobita). Sborník Národního Muzea v Praze, 42:1–72.Google Scholar
Přibyl, A., Vanēk, J., and Pek, I. 1985. Phylogeny and taxonomy of family Cheiruridae (Trilobita). Acta Universitatis Palackianae Olomucensis Facultas Rerum Naturalium Geographica-Geologica, no. 24, 83:107–193.Google Scholar
Pyle, L. J. and Barnes, C. R. 2003. Conodonts from a platform to basin transect, Lower Ordovician to Lower Silurian, northeastern British Columbia, Canada. Journal of Paleontology, 77:146–171.Google Scholar
Rasetti, Franco. 1944. Upper Cambrian trilobites from the Lévis Conglomerate. Journal of Paleontology, 18:229–258.Google Scholar
Raymond, P. E. 1905. Trilobites of the Chazy limestone. Annals of the Carnegie Museum, 3, no. 2:328–386.CrossRefGoogle Scholar
Raymond, P. E. 1910a. Notes on Ordovician trilobites. IV. New and old species of trilobites from the Chazy. Annals of the Carnegie Museum, 7:60–80.Google Scholar
Raymond, P. E. 1910b. Trilobites of the Chazy formation in Vermont. Report of the Vermont State Geologist 1909-1910:213–248.Google Scholar
Raymond, P. E. 1913a. Notes on some new and old trilobites in the Victoria Memorial Museum. Geological Survey of Canada, Victoria Memorial Museum Bulletin 1:33–39.Google Scholar
Raymond, P. E. 1913b. A revision of the species which have been referred to the genus Bathyurus . Victoria Memorial Museum Bulletin 1:51–80.Google Scholar
Raymond, P. E. 1916. New and old Silurian trilobites from southeastern Wisconsin with notes on the genera of the Illaenidae. Bulletin of the Museum of Comparative Zoology 31, 64 p.Google Scholar
Raymond, P. E. 1925. Some trilobites of the lower Middle Ordovician of eastern North America. Bulletin of the Museum of Comparative Zoology 67, number 1, 180 p.Google Scholar
Reed, F. R. C. 1905. Classification of the Phacopidae. Geological Magazine ser. 5, 2:172–178, 224-228.Google Scholar
Reed, F. R. C. 1928. Notes on the Bronteidae. Annals and Magazine of Natural History, (10) 1:49–78.Google Scholar
Reed, F. R. C. 1931. The lower Palaeozoic trilobites of Girvan. Supplement 2. Palaeontographical Society of London Monograph, 30 p.Google Scholar
Rigby, J. K. and Desrochers, A. 1995. Lower and Middle Ordovician lithistid desmosponges from the Mingan Islands, Gulf of St. Lawrence, Québec, Canada. Paleontological Society, Memoir 41, 35 p.Google Scholar
Ross, R. J. Jr. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Peabody Museum of Natural History, Bulletin 6, 161 p.Google Scholar
Ross, R. J. Jr. 1967. Some Middle Ordovician brachiopods and trilobites from the Basin Ranges, western United States. United States Geological Survey Professional Paper 523-D, 43 p.Google Scholar
Ross, R. J. Jr. 1970. Ordovician brachiopods, trilobites, and stratigraphy in eastern and central Nevada. United States Geological Survey Professional Paper 639, 193 p.Google Scholar
Ross, R. J. Jr. 1972. Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada. United States Geological Survey Professional Paper 685, 47 p.CrossRefGoogle Scholar
Ross, R. J. Jr. and Shaw, F. C. 1972. Distribution of the Middle Ordovician Copenhagen Formation and its trilobites in Nevada. United States Geological Survey Professional Paper 749, 33 p.Google Scholar
Rudkin, D. M. and Tripp, R. P. 1989. The type species of the Ordovician trilobite genus Isotelus: I. gigas Dekay, 1824. Royal Ontario Museum, Life Sciences Contribution, 152:1–19.Google Scholar
Rushton, A. W. A., Tunnicliffe, S. P., Tripp, R. P. 1996. The faunas of the Albany Group in the Girvan area, and their palaeographical implications. Scottish Journal of Geology, 32:23–32.Google Scholar
Shaw, F. C. 1968. Early Middle Ordovician Chazy trilobites of New York. New York State Museum and Science Service Memoir 17, 163 p.Google Scholar
Shaw, F. C. 1974. Simpson Group (Middle Ordovician) trilobites of Oklahoma. Paleontological Society Memoir 6, 54 p.Google Scholar
Shaw, F. C. 1980. Shallow-water lithofacies and trilobite biofacies of the Mingan Formation (Ordovician), eastern Québec. Le Naturaliste Canadien, 107:227–242.Google Scholar
Shaw, F. C. 2000. Trilobites of the Králūv Dvūr Formation, Prague Basin, Czech Republic. Czech Geological Survey Bulletin, 75:371–404.Google Scholar
Shaw, F. C. and Fortey, R. A. 1977. Middle Ordovician facies and trilobite faunas in North America. Geological Magazine, 114:409–443.Google Scholar
Shaw, F. C. and Ormiston, A. R. 1964. The eye socle of trilobites. Journal of Paleontology, 38:1001–1002.Google Scholar
Slocum, A. W. 1913. New trilobites from the Maquoketa beds of Fayette County, Iowa. Field Museum Natural History, Geological Series, 17:41–83.Google Scholar
Stouge, S. and Boyce, W. D. 1983. Fossils of northwestern Newfoundland and southeastern Labrador: conodonts and trilobites. Newfoundland Department of Mines and Energy, Report 83-3, 55 p.Google Scholar
Thomas, A. T. 1978. British Wenlock trilobites, Part I; Palaeontographical Society of London Monographs, 1978:1–56.Google Scholar
Tremblay, J. V. and Westrop, S. R. 1991. Middle Ordovician trilobites from the Sunblood Formation, District of Mackenzie, Canada. Journal of Paleontology, 65:801–824.Google Scholar
Tripp, R. P. 1962. Trilobites from the confinis Flags (Ordovician) of the Girvan District, Ayrshire. Transactions of the Royal Society of Edinburgh: Earth Sciences, 65:1–36.Google Scholar
Tripp, R. P. 1965. Trilobites from the Albany Division (Ordovician) of the Girvan District, Ayrshire. Palaeontology, 8:577–603.Google Scholar
Tripp, R. P. 1967. Trilobites from the upper Stinchar Limestone (Ordovician) of the Girvan District, Ayrshire. Transactions of the Royal Society of Edinburgh: Earth Sciences, 67:43–93.Google Scholar
Tripp, R. P. 1976. Trilobites from the basal superstes mudstones (Ordovician) at Aldons Quarry, near Girvan, Ayrshire. Transactions of the Royal Society of Edinburgh: Earth Sciences, 69:369–423.Google Scholar
Tripp, R. P. 1979. Trilobites from the Ordovician Auchensoul and Stinchar limestones of the Girvan District, Strathclyde. Palaeontology, 22:339–361.Google Scholar
Tripp, R. P. 1980. Trilobites from the Ordovician Balclatchie and lower Ardwell groups of the Girvan District, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 71:123–145.Google Scholar
Tripp, R. P. 1993. Review of the trilobites from the Middle Ordovician Barr Group, Girvan district, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 84:87–102.Google Scholar
Tripp, R. P. and Evitt, W. R. 1981. Silicified Lichidae (Trilobita) from the Middle Ordovician of Virginia. Geological Magazine, 118:665–677.Google Scholar
Twenhofel, W. H. 1938. Geology and paleontology of the Mingan Islands, Québec. Geological Society of America Special Paper 11, 132 p.Google Scholar
Ulrich, E. O. 1930. Ordovician trilobites of the family Telephidae and concerned stratigraphic correlations. Proceedings of the United States National Museum, 76, article 21, 101 p.Google Scholar
Ulrich, E. O. and Cooper, G. A. 1936. New genera and species of Ozarkian and Canadian brachiopods. Journal of Paleontology, 10:616–631.Google Scholar
Vogdes, A. W. 1890. A bibliography of Paleozoic Crustacea from 1698 to 1889 including a list of North American species and a systematic arrangement of genera. United States Geological Survey Bulletin 63:177.Google Scholar
Wahlenberg, G. 1818. Petrificata telluris Svecanae, Nova Acta Regiae Societatis Scientiarum Upsaliensis, 8:1–116.Google Scholar
Walcott, C. D. 1886. Second contribution to the studies on the Cambrian faunas of North America. United States Geological Survey Bulletin, 30:1–369.Google Scholar
Westrop, S. R. and Ludvigsen, R. 1983. Systematics and paleoecology of Upper Ordovician trilobites from the Selkirk Member of the Red River Formation, southern Manitoba. Manitoba Division Mineral Resources, Geological Report 82-2, p. 1–51.Google Scholar
Whitfield, R. P. 1886. Notice of geological investigations along the eastern shore of Lake Champlain. Bulletin of the American Museum of Natural History, 1:293–345.Google Scholar
Whitfield, R. P. 1890. Observations on the fauna of the rocks at Fort Cassin. Vermont Bulletin of the American Museum Natural History, 3:25–39.Google Scholar
Whittington, H. B. 1949. Dolichoharpes and the origin of the harpid fringe. American Journal of Science, 247:276–285.Google Scholar
Whittington, H. B. 1950a. A monograph of the British trilobites of the family Harpidae. Palaeontographical Society of London, Monograph 1949, 55 p.Google Scholar
Whittington, H. B. 1950b. Sixteen Ordovician genotype trilobites. Journal of Paleontology, 24:531–565.Google Scholar
Whittington, H. B. 1953. North American Bathyuridae and Leiostegiidae (Trilobita). Journal of Paleontology, 27:647–678.Google Scholar
Whittington, H. B. 1961. Middle Ordovician Pliomeridae (Trilobita) from Nevada, New York, Québec, Newfoundland. Journal of Paleontology, 35:911–922.Google Scholar
Whittington, H. B. 1963. Middle Ordovician trilobites from Lower Head, western Newfoundland. Bulletin of the Museum of Comparative Zoology, 129:1–118.Google Scholar
Whittington, H. B. 1965. Trilobites of the Ordovician Table Head Formation, western Newfoundland. Bulletin of the Museum of Comparative Zoology, 132:277–441.Google Scholar
Whittington, H. B. 1997. Illaenidae: Morphology of thorax, classification, and mode of life. Journal of Paleontology, 71:878–896.Google Scholar
Whittington, H. B. 2000. Stygina, Eobronteus: Morphology, classification and affinities of Illaenidae. Journal of Paleontology, 74:879–889.Google Scholar
Zhou, Z. and Dean, W. T. 1986. Ordovician trilobites from Chedao, North-West China. Palaeontology, 29:743–786.Google Scholar
Zhou, Z., Yin, G., and Tripp, R. P. 1984. Trilobites from the Ordovician Shihtzupu Formation, Zunyi, Guizhou Province, China. Transactions of the Royal Society of Edinburgh: Earth Sciences, 75:13–36.Google Scholar