Paleontological Journal

, Volume 41, Issue 2, pp 132–145 | Cite as

Morphogenesis, phylogenetic relationships, and distribution of the bryozoans of the genus Orbipora Eichwald, 1856 (order Trepostomida)

  • A. V. Koromyslova


Five species of the genus Orbipora, including two new species, O. lynnensis sp. nov. and O. ukhakuensis sp. nov., are described from the Middle Ordovician of the Leningrad Region and Estonia. The colonies of the species O. acanthophora Bassler, 1911 and O. solida Bassler, 1911 are measured and figured for the first time. The stratigraphic range and geographic distribution of O. acanthophora are refined. A scheme of possible phylogenetic relationships and distribution maps of the species of the genus are presented.

Key words

Bryozoa Trepostomida Orbipora morphogenesis phylogenetic relationships occurrence 


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Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • A. V. Koromyslova
    • 1
  1. 1.Moscow State UniversityVorob’evy gory, Moscow GSP-3Russia

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