New Albian to Cenomanian (Cretaceous) Dinoflagellate Cyst Taxa of Ovoidinioid Affinities from East Greenland, the Barents Sea and England

Palyno-biostratigraphical studies of upper Albian-Lower Cenomanian successions from East Greenland, the south-western Barents Sea and south-eastern England have revealed new dinoflagellate cyst taxa of clear or questioned ovoidinioid affinities. This paper describes the new genus Sindridinium, four...

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Bibliographic Details
Published in:Palynology 2018-07, Vol.42 (3), p.366-391
Main Authors: Nøhr-Hansen, Henrik, Costa, Lucy I, Pearce, Martin A, Alsen, Peter
Format: Article
Language:English
Subjects:
Affinity
Albian
Arctic Ocean
Arctic region
Barents Sea
biogeography
biostratigraphy
Cenomanian
Cretaceous
Cysts
Dinoflagellata
dinoflagellate cysts
East Anglia
East Greenland
electron microscopy data
England
Epelidosphaeridia manifesta
Europe
Eurycope manifesta
Fossil animals
Geological time
Great Britain
Greenland
Lower Cenomanian
Lower Cretaceous
Mesozoic
microfossils
Microorganisms
morphology
New combinations
New genera
new names
New species
new taxa
Norfolk England
Ovoidinioideae
Ovoidinium epelidosphaeroides
Paleobotany
palynomorphs
Phylogeny
Physical characteristics
SEM data
Sindridinium
Stratigraphy
systematics
Taxa
Taxonomic revision
taxonomy
Trunch England
United Kingdom
Upper Albian
Upper Cretaceous
Western Europe
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Summary:Palyno-biostratigraphical studies of upper Albian-Lower Cenomanian successions from East Greenland, the south-western Barents Sea and south-eastern England have revealed new dinoflagellate cyst taxa of clear or questioned ovoidinioid affinities. This paper describes the new genus Sindridinium, four new species - Ovoidinium epelidosphaeroides sp. nov., Epelidosphaeridia manifesta sp. nov., Sindridinium borealis gen. et sp. nov. and Sindridinium anaanae gen. et sp. nov. - and proposes a new combination, Sindridinium? torulosa comb. nov. (formerly Canningia torulosa). The genus Epelidosphaeridia is emended based on features seen in E. manifesta sp. nov., which demonstrate peridiniacean affinities and support inclusion in the Ovoidinioideae. Morphological gradations between Epelidosphaeridia spinosa, E. manifesta sp. nov. and Ovoidinium epelidosphaeroides sp. nov., suggest close phylogenetic relationships, also postulated between Sindridinium? torulosa comb. nov., S. borealis gen. et sp. nov. and S. anaanae gen. et sp. nov. The stratigraphic ranges of the taxa described are calibrated to known dinoflagellate markers and mid-Cretaceous ammonites.
ISSN:0191-6122
1558-9188
DOI:10.1080/01916122.2017.1351006