Islandinium pacificum sp. nov., a new dinoflagellate cyst from the upper Quaternary of the northeast Pacific

Round brown process-bearing cysts (RBPC) produced by dinoflagellates (Dinophyceae) occur as an important part of assemblage diversities in seafloor sediments worldwide. Here a new species, Islandinium pacificum, is described from surface sediment samples from coastal waters of British Columbia (Cana...

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Bibliographic Details
Published in:Palynology
Main Authors: Gurdebeke, Pieter R., Mertens, Kenneth, Pospelova, Vera, van Nieuwenhove, Nicolas, Louwye, Stephen
Other Authors: Laboratoire Environnement Ressources de Bretagne Occidentale (LERBO), Unité Littoral (LITTORAL), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2020
Subjects:
[SDV]Life Sciences [q-bio]
Canada
Pacific
British Columbia
Vøring Plateau
North Atlantic
Online Access:https://hal.science/hal-04202327
https://doi.org/10.1080/01916122.2018.1549118
Description
Summary:Round brown process-bearing cysts (RBPC) produced by dinoflagellates (Dinophyceae) occur as an important part of assemblage diversities in seafloor sediments worldwide. Here a new species, Islandinium pacificum, is described from surface sediment samples from coastal waters of British Columbia (Canada). Additional observations are made on material from the Holocene of Kyuquot Sound (Vancouver Island, Canada) and the Eemian of the Vøring Plateau (North Atlantic). The cysts have a smooth wall and bear acuminate processes with barbs. Incubation experiments reveal an affinity with the motile stage Protoperidinium mutsuense. The ecology of the new species is specified.

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