Five Lower Albian (Lower Cretaceous) areoligeracean dinoflagellate cyst species are present in the Carstone Formation at Middlegate Quarry, North Lincolnshire, UK; Canninginopsis monile, Circulodinium deflandrei, Cyclonephelium compactum, Cyclonephelium intonsum and Cyclonephelium longispinatum. The taxonomy of Circulodinium deflandrei is reviewed with respect to 20 measured Carstone specimens. The taxonomy of Cyclonephelium longispinatum is reviewed with respect to 70 measured Carstone specimens, and a study of 40 measured specimens from its type material in Site 361, Deep Sea Drilling Project Leg 40, offshore south-western Africa. Circulodinium deflandrei and Cyclonephelium longispinatum have recently been considered by other workers to be junior synonyms, respectively of Circulodinium hirtellum and Tenua anaphrissa. However, following detailed study of their morphologies, the synonymies are formally rejected here. An emended diagnosis is given for C. longispinatum. A re-assessment of stratigraphical ranges of taxa co-occurring with the type material of C. longispinatum is consistent with a Late Albian to Early Turonian age range in Site 361.
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Research Article|
July 17, 2024
Early Publication
Two areoligeracean dinoflagellate cysts from the Carstone Formation (Lower Cretaceous) at Middlegate Quarry, North Lincolnshire, UK
Paul Dodsworth;
Paul Dodsworth
*
1
StrataSolve Ltd
, 15 Francis Road, Stockton Heath
, Warrington WA4 6EB, UK
*
Correspondence: [email protected]
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Roderick D. Black
Roderick D. Black
2
22 Holtermann Street, Crows Nest
, Sydney, NSW 2065, Australia
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Paul Dodsworth
*
1
StrataSolve Ltd
, 15 Francis Road, Stockton Heath
, Warrington WA4 6EB, UK
Roderick D. Black
2
22 Holtermann Street, Crows Nest
, Sydney, NSW 2065, Australia
*
Correspondence: [email protected]
Publisher: Geological Society of London
Received:
04 Jun 2024
Revision Received:
08 Jul 2024
Accepted:
09 Jul 2024
First Online:
17 Jul 2024
Online ISSN: 2041-4811
Print ISSN: 0044-0604
© 2024 The Author(s). Published by The Geological Society of London for the Yorkshire Geological Society. All rights, including for text and data mining (TDM), artificial intelligence (AI) training, and similar technologies, are reserved. For permissions: https://www.lyellcollection.org/publishing-hub/permissions-policy. Publishing disclaimer: https://www.lyellcollection.org/publishing-hub/publishing-ethics
© 2024 The Author(s)
Proceedings of the Yorkshire Geological Society (2024) pygs2024-004.
Article history
Received:
04 Jun 2024
Revision Received:
08 Jul 2024
Accepted:
09 Jul 2024
First Online:
17 Jul 2024
Citation
Paul Dodsworth, Roderick D. Black; Two areoligeracean dinoflagellate cysts from the Carstone Formation (Lower Cretaceous) at Middlegate Quarry, North Lincolnshire, UK. Proceedings of the Yorkshire Geological Society 2024; doi: https://doi.org/10.1144/pygs2024-004
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Index Terms/Descriptors
- Albian
- Atlantic Ocean
- Cretaceous
- Deep Sea Drilling Project
- Dinoflagellata
- DSDP Site 361
- England
- Europe
- Great Britain
- Leg 40
- Lincolnshire England
- lower Albian
- Lower Cretaceous
- Mesozoic
- microfossils
- morphology
- palynomorphs
- South Atlantic
- taxonomy
- United Kingdom
- Western Europe
- Carstone Formation
- Middlegate Quarry
- South Ferriby England
- North Lincolnshire England
- Circulodinium deflandrei
- Cyclonephelium longispinatum
Latitude & Longitude
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