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Koromyslova et al., 2009

New records of bryozoans from the Lower Ordovician of the Leningrad Region and intercolonial variability in Esthoniopora lessnikowae (Modzalevskaya)

Koromyslova, A. V., Fedorov, P. V., Ershova, V. B.
DOI
DOI10.1134/S0031030109020051
Aasta2009
KirjastusPleiades Publishing Ltd
AjakiriPaleontological Journal
Köide43
Number2
Leheküljed153-161
Tüüpartikkel ajakirjas
Keelinglise
Id3203

Abstrakt

The structure of vesicular tissue in bryozoans Esthoniopora lessnikowae (Modzalevskaya, 1953) from the Latorp Horizon (Lower Ordovician) of the Leningrad Region is studied for the first time. The intercolonial variability of this species, which is expressed in the variations in the thickness of the walls of autozooecia, shape of apertures, and the structure of vesicular tissue, is thoroughly studied. New data are used to supplement the description of the species E. lessnikowae (Modzalevskaya, 1953) and the diagnosis of the genus Esthoniopora Bassler, 1911.

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