E. H. Jørgensen’s radiolarian collection is stored at the Natural History Museum in Oslo and holds 93 slides, of these 76 are with plankton from the western and northern coast off Norway. Jørgensen described 43 new polycystine radiolarian species from this material, but did not assign any types. In this present study we have re-examined the collection, registered and photographed all slides and radiolarian specimens, and designated lectotypes and paralectotypes for many of Jørgensen’s species.

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