Additional Observations of Spiniferites alaskensis from Topotype Material

Here we present new observations of Spiniferites alaskensis, a relatively rare species described from the Eemian of the Gulf of Alaska. We show that the species shows a gonyaulacacean tabulation: Po, 4′, 6′, 6c,? s, 6′, 1p, 1′. The surface is finely granulate to scabrate. The species bears character...

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Bibliographic Details
Published in:Palynology 2018-12, Vol.42 (S1), p.89-92
Main Authors: Marret, Fabienne, Mertens, Kenneth Neil
Format: Article
Language:English
Subjects:
Cenozoic
chorate
Dinoflagellata
East Pacific
Eemian
electron microscopy data
Granulation
Gulf of Alaska
Leg 145
Life Sciences
microfossils
morphology
North Pacific
Northeast Pacific
Ocean Drilling Program
ODP
ODP Site 887
Pacific Ocean
Paleobotany
palynomorphs
Pleistocene
processes
Quaternary
Rare species
SEM data
Spiniferites
Spiniferites alaskensis
Tabulation
type specimens
upper Pleistocene
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Summary:Here we present new observations of Spiniferites alaskensis, a relatively rare species described from the Eemian of the Gulf of Alaska. We show that the species shows a gonyaulacacean tabulation: Po, 4′, 6′, 6c,? s, 6′, 1p, 1′. The surface is finely granulate to scabrate. The species bears characteristic processes: these are exclusively gonal, membranous, perforated and end distally in platforms with stumpy ends. We provide more detail as how this species compares to closely related species belonging to the genus Spiniferites.
ISSN:0191-6122
1558-9188
DOI:10.1080/01916122.2018.1465734