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Intracolonial variability in new bryozoans from the Middle Jurassic of the Bryansk Region (Russia)

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Abstract

Two new species of encrusting bryozoans (Stenolaemata, Tubuliporida) from the Middle Callovian (Middle Jurassic) deposits of the Bryansk Region, Oncousoecia guzhovi sp. nov. and Microeciella fokinensis sp. nov., are described. Their intracolonial variability, which is due to differences in astogenetic stages and to external factors, is discussed.

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References

  1. F. Canu, “Les ovicelles des bryozoaires cyclostomes. Études sur quelques familles nouvelles et anciennes,” Bull. Soc. Géol. Fr., Sér. 4, 16, 324–335 (1918).

    Google Scholar 

  2. R. J. Cuffey and J. E. Ehleiter, “New Bryozoan Species from the Mid-Jurassic Twin Creek and Carmel Formations of Wyoming and Utah,” J. Paleontol. 58(4), 668–682 (1984).

    Google Scholar 

  3. P. A. Gerasimov, Index Fossils of the Mesozoic of the Central Regions of the European Part of the USSR: Part 2. Echinoderms, Crustaceans, Worms, Bryozoans, and Corals of the Jurassic Deposits (Gosgeoltekhizdat, Moscow, 1955) [in Russian].

    Google Scholar 

  4. P. A. Gerasimov, V. V. Mitta, M. D. Kochanova, and E. M. Tesakova, Fossils of the Callovian Stage of Central Russia (Vseross. Nauch.-Issled. Geol. Neft. Inst.; Mosk. Gor. Stantsiya Yunykh Naturalistov, Moscow, 1996) [in Russian].

    Google Scholar 

  5. U. Hara, “Middle and Upper Jurassic Bryozoan Biota of the Southern Poland—Their Diversity, Palaeoecology, Evolution Pattern and Biogeography,” in Jurassic Organisms in Space and Time. 7th Int. Congr. on the Jurassic System, Sept. 6–18, 2006 (Poland, Kraków), pp. 234–235.

  6. D. Jebram, “Preliminary Observation on the Influences of Food and Other Factor on the Growth of Bryozoa,” Kieller Meeresforsch. 29(1), 50–57 (1973).

    Google Scholar 

  7. G. A. Klyuge, Bryozoans of the Northern Seas of the USSR (Akad. Nauk SSSR, Moscow, 1962) [in Russian].

    Google Scholar 

  8. P. D. Taylor and L. Sequeiros, “Toarcian Bryozoans from Belchite in North-East Spain,” Bull. Brit. Mus. Nat. Hist. (Geol.) 36(2), 117–129 (1982).

    Google Scholar 

  9. P. D. Taylor and M. A. Wilson, “Middle Jurassic Bryozoans from the Carmel Formation of Southwestern Utah,” J. Paleontol. 73(5), 816–830 (1999).

    Google Scholar 

  10. L. A. Viskova, “New Data on the Middle Jurassic Bryozoans of the Central Part of European Russia,” Byull. Mosk. O-va Ispyt. Prir., Otd. Geol. 81(4), 49–59 (2006a).

    Google Scholar 

  11. L. A. Viskova, “Diversification of the Jurassic Bryozoans (Stenolaemata) of the Russian Platform,” in Evolution of the Biosphere and Biodiversity (KMK, Moscow, 2006b), pp. 168–176 [in Russian].

    Google Scholar 

  12. L. A. Viskova, “New Bryozoans (Stenolaemata) from the Middle Jurassic of Moscow City and the Moscow Region,” Paleontol. Zh., No. 1, 46–55 (2007) [Paleontol. J. 41 (1), 49–60 (2007)].

  13. B. Walter, “Les bryozoaires jurassiques en France. Étude systématique. Rapports avec la stratigraphie et la paléoécologie,” Docum. Lab. Géol. Fac. Sci. Lyon, No. 35, 1–328 (1969).

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Correspondence to L. A. Viskova.

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Original Russian Text © L.A. Viskova, 2009, published in Paleontologicheskii Zhurnal, 2009, No. 2, pp. 46–52.

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Viskova, L.A. Intracolonial variability in new bryozoans from the Middle Jurassic of the Bryansk Region (Russia). Paleontol. J. 43, 162–169 (2009). https://doi.org/10.1134/S0031030109020063

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