Coccolithophorids in Polar Waters: Mercedesia gen. nov., Ericiolus, Quaternariella and Porsildia gen. nov.

• Authors: Helge A. Thomsen , Jette B. Østergaard
• Languages of publication: PL

Abstracts

PL

Coccolithophorid samples from arctic and antartic regions have been examined for an update on species morphology, life history aspects and biogeography for the coccolithophorid genera Ericiolus and Quaternariella and two other genera here described as new. Mercedesia gen. nov. comprises three new species, M. aspiphora sp. nov. from both polar regions, the arctic M. multistellata sp. nov. and the Antarctic M. pusilla sp. nov. The genus is characterized by its monomorphic nannoliths that are shaped like three-armed stars. The new arctic monospecific genus Porsildia gen. nov. is established for the heterococcolith-bearing species P. acerviphora sp. nov. Combination cells, from the arctic region, bearing holococcoliths of Quaternariella obscura and previously undescribed heterococcoliths, with a Pappo­sphaeracean affinity, are described here for the first time.

Keywords

PL

coccolithophorid, Mercedesia, Ericiolus, Quaternariella, Porsildia, Polar Regions, electron microscopy

• Publisher: Uniwersytet Jagielloński
• Journal: Acta Protozoologica
• Year: 2015
• Volume: 54
• Issue: 3

Dates

published

2015

online

18 - 09 - 2015

Contributors

author

Helge A. Thomsen

author

Jette B. Østergaard