Morphological features and systematic position of the bryozoans Onychocella rowei and O. mimosa (Cheilostomata) from a Campanian erratic block (Belarus)

The results of the investigations into the morphology of two bryozoan species Onychocella rowei (Brydone, 1906) and O. mimosa Brydone, 1930 (Cheilostomata: Onychocellidae Jullien, 1881) the specimens of which were discovered in an erratic block of Campanian age located in the vicinity of the town of...

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Bibliographic Details
Published inPaleontological journal Vol. 48; no. 3; pp. 275 - 286
Main Author Koromyslova, A. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.05.2014
Subjects
Cheilostomata
Earth and Environmental Science
Earth Sciences
Mimosa
Onychocellidae
Paleontology
Belarus
aberrant forms
Campanian
colonial variability
morphology
Bryozoa
reparative avicularia
taxonomy
erratic block
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Summary:The results of the investigations into the morphology of two bryozoan species Onychocella rowei (Brydone, 1906) and O. mimosa Brydone, 1930 (Cheilostomata: Onychocellidae Jullien, 1881) the specimens of which were discovered in an erratic block of Campanian age located in the vicinity of the town of Grodno (Belarus) are presented. The intra- and intercolonial variability of avicularia of these species are studied. Some colonies of O. rowei are shown to be aberrant forms that exhibit various developmental anomalies of autozooids and avicularia. Some specimens of O. rowei are shown to have reparative avicularia. The taxonomic positions of these species are discussed.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0031-0301
1555-6174
DOI:10.1134/S0031030114030137