Abstract
The spatial variations of bryozoans of the Devonian genus Minussina throughout its existence are discussed. The areal distribution of Minussina is shown to be restricted mainly to the Altai-Sayan region. The variability of seven morphological characters of Minussina species is analyzed. The variations in the number of acanthozooecia and in the thickness of walls are attributed to evolutionary change; variations in the measurements of apertures and heterozooecia are explained by geographical variation. The narrow stratigraphic range of Minussina species makes it possible to use them for correlation of Devonian deposits.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. G. Astrova, Bryozoans of the Borshchev and Chortkov Horizons of Podolia: Proceedings of the Paleontological Institute of the Academy of Sciences of the USSR, Vol. 98 (Akad. Nauk SSSR, Moscow, 1964) [in Russian].
G. G. Astrova, Developmental History, Taxonomic System, and Phylogeny of Bryozoans: Order Trepostomida: Proceedings of the Paleontological Institute of the Academy of Sciences of the USSR, Vol. 169 (Nauka, Moscow, 1978) [in Russian].
G. V. Kopaevich, Atlas of Bryozoans of the Ordovician, Silurian, and Devonian of Mongolia: Proceedings of the Joint Soviet-Mongolian Paleontological Expedition, Issue 22 (Nauka, Moscow, 1984) [in Russian].
V. I. Krasnov and V. N. Dubatolov, “Famennian Stage in the Evolution of the Geographical Environments of Siberian Seas,” in Problems in the Theory of Stratigraphy: Middle Paleozoic of Siberia: Selected Works (Sibirsk. Nauchno-Issled. Inst. Geol. Geof. Mineral’n. Syr’ya (SNIIGGiMS), Novosibirsk, 2007a) [in Russian].
V. I. Krasnov and V. N. Dubatolov, “Paleoclimates of Asian Russia in the Devonian,” in Problems in the Theory of Stratigraphy: Middle Paleozoic of Siberia: Selected Works (Sibirsk. Nauchno-Issled. Inst. Geol. Geof. Mineral. Syr’ya (SNIIGGiMS), Novosibirsk, 2007b) [in Russian].
I. P. Morozova, Devonian Bryozoans of the Minusinsk and Kuznetsk Basins, Proceedings of the Paleontological Institute of the Academy of Sciences of the USSR, Vol. 86 (Akad. Nauk SSSR, Moscow, 1960) [in Russian].
E. B. Naimark and R. V. Gorjunova, “Biogeography and Evolution of Paleozoic Bryozoans of the Genus Rhombotrypella,” Paleontol. Zh., No. 6, 50–63 (2004) [Paleontol. J. 38 (6), 639–652 (2004)].
L. I. Popeko, Carboniferous of the Mongol-Okhotsk Orogenic Belt (Dal’nauka, Vladivostok, 2000) [in Russian].
Z. A. Tolokonnikova, “New Bryozoans (Bryozoa) from the Upper Devonian (Lower Famennian) of the Kuznetsk Basin,” Paleontol. Zh., No. 5, 64–67 (2007) [Paleontol. J. 41 (5), 537–541 (2007)].
T. D. Troizkaya, Devonian Bryozoans of Kazakhstan (Nedra, Moscow, 1968) [in Russian].
K. N. Volkova, Devonian Bryozoans of the Southeastern Altai: Proceedings of the Institute of Geology and Geophysics of the Siberian Division of the Academy of Sciences of the USSR, Vol. 199 (Nauka, Moscow, 1974) [in Russian].
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © Z.A. Tolokonnikova, 2009, published in Paleontologicheskii Zhurnal, 2009, No. 4, pp. 37–45.
Rights and permissions
About this article
Cite this article
Tolokonnikova, Z.A. Biogeography and evolution of bryozoans of the genus Minussina Morozova, 1961. Paleontol. J. 43, 391–400 (2009). https://doi.org/10.1134/S0031030109040066
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0031030109040066