Skip to main content Accessibility help

Semitubina yukonensis new species, first occurrence of this biogeographically distinctive Old World Realm gastropod genus in the Lower Devonian of the western hemisphere

  • Robert B. Blodgett (a1), Jiří Frýda (a2) and Alfred C. Lenz (a3)


Despite the rapidly expanding knowledge of Lower Devonian brachiopod faunas of the Western Cordillera of Canada (Lenz, 1976, 1977a, 1977b, 1982; Ludvigsen, 1970; Perry, 1984; Perry and Lenz, 1978; Perry et al., 1974, 1981), equivalent data on coeval gastropod faunas from this region are non-existent; to date, no publications have appeared in which gastropods have been described. Blodgett et al. (1988, table 1) provided faunal lists for two Lower Devonian localities in Western Canada: 1) Lochkovian-Emsian age collections from the Mackenzie Mountains, Northwest Territories, collected by the late D. G. Perry as part of his Ph.D. dissertation (Perry, 1984); and 2) an early Emsian collection from the Mt. Lloyd George area, British Columbia. We are currently examining the gastropod material recovered by A. C. Lenz from his richly diverse collections in the Royal Creek area, Yukon Territory, equivalent in age to those gathered by D. G. Perry from the Mackenzie Mountains. This note is the first of several papers focused on these paleobiogeographically significant faunas, and it is our desire to ultimately make clear the character of this Early Devonian province, which appears to include strata of British Columbia, Yukon and Northwest Territories, as well as the non-accreted portion of adjacent east-central Alaska.



Hide All
Bandel, K. 1992. Platyceratidae from the Triassic St. Cassian Formation and the evolutionary history of the Neritomorpha (Gastropoda). Paläontologische Zeitschrift, 66:231240.
Bandel, K., and Fryda., J. 1999. Notes on the evolution and higher classification of the subclass Neritimorpha (Gastropoda) with the description of some new taxa. Geologica et Palaeontologica, 33:219235.
Bandel, K., Nützel, A., and Yancey., T. In press. Gastropods of the Buckhorn Asphalt (Pennsylvanian, Oklahoma). Senckenbergiana Lethaea.
Barrois, C. 1889. Faune du Calcaire D'Erbray (Loire Inférieure). Mémoires de la Société géologique du Nord, Tome III, p. 1348.
Blodgett, R. B. 1998. Emsian (Late Early Devonian) fossils indicate a Siberian origin for the Farewell terrane, p. 5361. In Clough, J. G. and Larson, F. (eds.), Short Notes on Alaskan Geology 1997. Alaska Division of Geological and Geophysical Surveys Professional Report 118.
Blodgett, R. B., and Boucot, A. J. 1999. Late Early Devonian (Late Emsian) eospiriferinid brachiopods from Shellabarger Pass, Talkeetna C-6 Quadrangle, south-central Alaska and their biogeographic importance; further evidence for a Siberian origin of the Farewell and allied Alaskan accreted terranes. Senckenbergiana Lethaea, 79(1):209221.
Blodgett, R. B., and Frýda., J. 1999. New Devonian gastropod genera important for paleogeographic reconstructions. Journal of the Czech Geological Society, 44:293308.
Blodgett, R. B., and Johnson., J. G. 1992. Early Middle Devonian (Eifelian) gastropods of central Nevada. Palaeontographica Abteilung A, 222:85139.
Blodgett, R. B., Rohr, D. M., and Boucot., A. J. 1988. Lower Devonian gastropod biogeography of the Western Hemisphere, p. 285305. In McMillan, N. J., Embry, A. F., and Glass, D. J. (eds.), Devonian of the World. Canadian Society of Petroleum Geologists Memoir 14, Volume 3.
Blodgett, R. B., Rohr, D. M., and Boucot., A. J. 1990. Early and Middle Devonian gastropod biogeography, p. 277284. In McKerrow, W. S. and Scotese, C. R. (eds.), Palaeozoic Palaeogeography and Biogeography. Geological Society (London) Memoir No. 12.
Chernyshev, F. 1885. Fauna nizhnyago devona zapadnago sklona urala. Trudy geologicheskago komiteta, Tom III, no. 1. St. Petersburg, 107 p.
Cossmann, M. 1918. Essais de paléoconchologie comparée, Volume 11. Paris.
Forney, G. G., Boucot, A. J., and Rohr., D. M. 1981. Silurian and Lower Devonian zoogeography of selected molluscan genera, p. 119164. In Gray, J., Boucot, A. J., and Berry, W. B. N. (eds.), Communities of the Past. Hutchinson Ross, Stroudsberg, Pennsylvania.
Frech, F. 1894. Über das Devon der Ostalpen. III. Die Fauna des Unterdevonischen Riffkalkes. Zeitschrift der Deutschen geologischen Gesellschaft, 46:446479.
Fryda, J. 1998a. Higher classification of the Paleozoic gastropods inferred from their early shell ontogeny. Abstracts, 13th International Malacological Congress, Washington D.C., p. 108.
Fryda, J. 1998b. Classification and Phylogeny of Devonian Gastropods. Unpublished , , 187 p., 28 pls.
Fryda, J. 1999. Higher classification of the Paleozoic gastropods inferred from their early shell ontogeny. Journal of the Czech Geological Society, 44:137153.
Gubanov, A. P., Blodgett, R. B., and Lytochkin., V. N. 1995. Early Devonian (Pragian) gastropods from Kyrgyzstan (Central Asia). Journal of Paleontology, 69:431440.
Hickman, C. S., and McLean., J. H. 1990. Systematic revision and suprageneric classification of trochacean gastropods. Natural History Museum of Los Angeles Country, Science series 35, 167 p.
Horny, R. 1992. Review of the Lower Devonian (Pragian) Gastropoda and Tergomya in the Barrandian (Bohemia) and their assemblage. Acta Universitatis Carolinae—Geologica, 1–2:512.
Jhaveri, R. B. 1969. Unterdevonische Gastropoden aus den Karnischen Alpen. Palaeontographica, Abt. A, 133:146176.
Karczewski, L. 1989. Slimaki i malze dewonskie z Gor Swietokrzyskich. Biuletyn Panstwowego Instytutu Geologicznego, 363:97133.
Kase, T. 1886. Mode of life of the Silurian uncoiled gastropod Semitubina sakoi n. sp. from Japan. Lethaia, 19:327337.
Klapper, G. 1969. Lower Devonian conodont sequence, Royal Creek, Yukon Territory, and Devon Island, Canada. Journal of Paleontology, 43:127.
Knight, J. B. 1956. New families of Gastropoda. Journal of the Washington Academy of Sciences, 46:4142.
Knight, J. B., Cox, L. R., Keen, A. M., Batten, R. L., Yochelson, E. L., and Robertson., R. 1960. Systematic descriptions, p. 11691324. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Pt. I, Mollusca 1. Geological Society of America and University of Kansas Press, Lawrence.
Lenz, A. C. 1972. Ordovician to Devonian history of northern Yukon and adjacent District of Mackenzie. Bulletin of Canadian Petroleum Geology, 20:321361.
Lenz, A. C. 1976. Lower Devonian brachiopod communities of the northern Canadian Cordillera. Lethaia, 9:1927.
Lenz, A. C. 1977a. Upper Silurian and Lower Devonian brachiopods of Royal Creek, Yukon, Canada. Pt. 1, Orthoida, Strophomenida, Pentamerida, Rhynchonellida. Palaeontographica Abt. A, 159:37109.
Lenz, A. C. 1977b. Upper Silurian and Lower Devonian brachiopods of Royal Creek, Yukon, Canada, Pt. 2, Spiriferida: Atrypacea, Dayiacea, Athyridacea, Spiriferacea. Palaeontographica Abt. A, v. 159, p. 111138.
Lenz, A. C. 1982. New data on Late Silurian and Lower Devonian brachiopods from the Royal Creek area, Yukon Territory. Canadian Journal of Earth Sciences, 19:364375.
Linsley, R. M. 1977. Some laws of gastropod shell form. Paleobiology, 3:196206.
Linsley, R. M. 1978. Locomotion rates and shell form in the Gastropoda. Malacologica, 17:193206.
Ludvigsen, R. 1970. Age and fauna of the Michelle Formation, northern Yukon Territory. Bulletin of Canadian Petroleum Geology, 18:407429.
Munier-Chalmas, E. 1876. Mollusques nouveaux des terrains paléozoiques des environs de Rennes. Journal de Conchyliologie, 3e series, 16:102109.
Norford, B. S. 1997. Ordovician and Silurian. In The geology, mineral and hydrocarbon potential of northern Yukon Territory and northwestern District of Mackenzie, Geological Survey of Canada Bulletin 422, p. 119162.
Oehlert, D. 1877. Sur les fossiles dévoniens du département de la Mayenne. Bulletin de la Société géologique de France, 3e série, 5:578603.
Oehlert, D. 1881. Documents pour servir a l'étude des faunes dévoniennes dans l'ouest de la France. Mémoires de la Sociéte Géologique de France, 3e série, 2:138.
Perner, J. 1903. Gastéropodes. In Barrande, J., Systěme silurien du centre de la Bohěme, Volume IV. Tome 1. Prague, 164 p.
Perner, J. 1907. Gastéropodes. In Barrande, J., Systěme silurien du centre de la Bohěme, Volume IV. Tome 2. Prague, 380 p.
Perry, D. G. 1984. Brachiopoda and biostratigraphy of the Silurian-Devonian Delorme Formation in the District of Mackenzie, the Yukon. Royal Ontario Museum Life Sciences Contributions, Number 138, 243 p., 46 pls.
Perry, D. G., and Lenz., A. C. 1978. Emsian paleogeography and shelly fauna biostratigraphy of Arctic Canada, p. 133160. In Stelck, C. R. and Chatterton, B. D. E. (eds.), Western and Arctic Canadian Biostratigraphy. Geological Association of Canada, Special Paper 18.
Perry, D. G., Boucot, A. J., and Gabrielse., H. 1981. Late Early Devonian brachiopods from the Mount Lloyd George area, northern British Columbia. Geological Survey of Canada Bulletin, 300:1540.
Perry, D. G., Klapper, G., and Lenz., A. C. 1974. Age of the Ogilvie Formation (Devonian), northern Yukon: based primarily on the occurrence of brachiopods and conodonts. Canadian Journal of Earth Sciences, 11:10551097.
Quenstedt, F. A. 1852. Handbuch der Petrefaktenkunde. Text, Atlas of plates (first edition), Tübingen.
Rohr, D. M., and Smith., R. E. 1978. Lower Devonian (Lochkovian) Gastropoda from the Canadian Arctic Islands. Canadian Journal of Earth Sciences, 15:11281141.
Rohr, D. M., Boucot, A. J., and Ushatinskaya., G. T. 1979. Early Devonian gastropods from the North Pribalkhash region, central Kazakhstan, U.S.S.R. Journal of Paleontology, 53:981989.
Spitz, A. 1907. Die Gastropoden des Karnischen Unterdevon. Beiträge zur Paläontologie und Geologie Österreich Ungarns und des Orients, 20:115190.
Tassell, C. B. 1976. A revision of the gastropod fauna of the Lilydale Limestone (Early Devonian) of Victoria. Memoirs of the National Museum of Victoria, 37:121.
Tassell, C. B. 1977. Gastropods from some Early Devonian limestones of the Walhalla Synclinorium, central Victoria. Memoirs of the National Museum of Victoria, 38:231245.
Thiele, J. 1925. Mollusca Weichtiere, p. 1596. In Kükenthal, W. (ed.), Handbuch der Zoologie, Fünfter Band, Erste Hälfte, Erste Lieferung. Berlin and Leipzig.
Vai, G. B. 1967. Le Dévonien Inférieur Biohermal des Alpes Carniques Centrales, p. 285300. In Colloque sur le Dévonien inférieur et ses limites (Rennes, 16-24 septembre 1964). Mémoires du Bureau de Recherches Géologiques et Minières, Volume 33.
Vostokova, V. A. 1961. Paleozoiskie gastropody novoi zemli i ostrova vaigach, p. 543. In Sbornik statei po paleontologii i biostratigrafii, Vypusk 25. Nauchno-issledovatelskii institut geologii arktiki ministerstva geologii i okhrany nedr SSSR, Leningrad.
Wenz, W. 1938. Gastropoda. Teil 1: Allgemeiner Teil und Prosobranchia, p. 1240. In Schindewolf, O. H. (ed.), Handbuch der Paläozoologie, Band 6. Gebrüder Borntraeger, Berlin.
Yoo, E. K. 1994. Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia. Records of the Australian Museum, 46:63120.

Related content

Powered by UNSILO

Semitubina yukonensis new species, first occurrence of this biogeographically distinctive Old World Realm gastropod genus in the Lower Devonian of the western hemisphere

  • Robert B. Blodgett (a1), Jiří Frýda (a2) and Alfred C. Lenz (a3)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.