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Hints & Nõlvak, 2023

Hints, L., Nõlvak, J. 2023. Latest Sandbian brachiopods and chitinozoan biostratigraphy in North Estonia. Estonian Journal of Earth Sciences 72 (1), 42-45. PDF | DOI | DETAILS

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ID47330
ReferenceHints & Nõlvak, 2023
AuthorHints, L., Nõlvak, J.
Year2023
TitleLatest Sandbian brachiopods and chitinozoan biostratigraphy in North Estonia
JournalEstonian Journal of Earth Sciences
Volume72
Number1
pgs.42-45
Source typearticle in journal
LanguageEnglish
DOIhttps://doi.org/10.3176/earth.2023.50
Abstract

The latest Sandbian brachiopods and chitinozoans were studied in the Kõrgessaare and Haapsalu drill cores of Estonia. The brachiopod fauna shows a gradual renewal through the Keila Regional Stage (RS), differently from the rather persistent association of chitinozoans. An exception is the uppermost part of the stage, which differs in two sections in the taxonomic composition of chitinozoans and the occurrence of two species-level taxa of the Dalmanella kegelensis brachiopod group. D. kegelensis sensu lato has been considered an index taxon of the biozone in the Keila RS. It links the brachiopod faunas of North Estonia to those in NW Russia. In the latter region, the dolomitic and siliciclastic lagoonal and peritidal deposits overlying the strata with brachiopods of the D. kegelensis group are considered the youngest part of the Keila RS.