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The brachiopod assemblage from the Maastrichtian white chalk at Chełm, eastern Poland: stratigraphical and palaeoecological implications

Geologie en mijnbouw, 2024-02, Vol.103, Article e3

The Author(s), 2024. Published by Cambridge University Press on behalf of the Netherlands Journal of Geosciences Foundation ;The Author(s), 2024. Published by Cambridge University Press on behalf of the Netherlands Journal of Geosciences Foundation. This work is licensed under the Creative Commons Attribution License This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited. (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 0016-7746 ;EISSN: 1573-9708 ;DOI: 10.1017/njg.2023.15

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  • Title:
    The brachiopod assemblage from the Maastrichtian white chalk at Chełm, eastern Poland: stratigraphical and palaeoecological implications
  • Author: Machalski, Marcin ; Bitner, Maria Aleksandra
  • Subjects: Benthos ; Brachiopoda ; Chalk ; Cretaceous ; Deep water ; Fossils ; Maastrichtian ; Marine invertebrates ; Original Article ; Owls ; palaeoecology ; Sea level ; Stratigraphy ; Substrates ; Terebratulina
  • Is Part Of: Geologie en mijnbouw, 2024-02, Vol.103, Article e3
  • Description: Brachiopods from the lower upper Maastrichtian (Upper Cretaceous) white chalk succession exposed at Chełm (eastern Poland) comprise Lingula cretacea, Isocrania costata, Cryptoporella antiqua, Cretirhynchia sp., Neoliothyrina sp., Carneithyris sp., Terebratulina chrysalis, T. faujasi, T. longicollis, Terebratulina spp., Gisilina sp., Bronnothyris bronni, Magas chitoniformis, Leptothyrellopsis polonicus and ?Aemula sp. This assemblage is relatively poor in terms of taxonomic diversity and specimen abundance and is dominated by stratigraphically long-ranging species. It is best comparable to that from the micromorphic brachiopod Rugia tenuicostata–Meonia semiglobularis Zone as distinguished in the white chalk successions of Denmark and northern Germany, although this zone is usually placed in the upper lower Maastrichtian. The Chełm succession represents a relatively deep-water and ‘benthos-poor’ variety of white chalk deposited in the Boreal Chalk Sea of Europe. The brachiopod assemblage studied is typical of such a habitat, having been controlled largely by the low availability of minute skeletal substrates suitable for brachiopod settlement.
  • Publisher: Cambridge, UK: Cambridge University Press
  • Language: English;Dutch;French;German
  • Identifier: ISSN: 0016-7746
    EISSN: 1573-9708
    DOI: 10.1017/njg.2023.15
  • Source: ProQuest Central
    DOAJ Directory of Open Access Journals
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