A new radiolarian genus and species, Joergensenium rotatile, is
described. This species is restricted to recent sediments and plankton
samples from the North Atlantic. Its recent distribution in the
Norwegian Sea and West Norwegian fjords shows a strong affinity to the
neritic province and reaches almost 2% in Hryangerfjord. This species
is only known from late Glacial and Holocene sediments in the Nordic
seas. This genus shows, however, a patchy stratigraphic distribution
with its first occurrence in the south-west Pacific within Palcocene, in
the Middle to Late Miocene from the Norwegian Sea, and in the Labrador
Sea at the base of biozone NN 21. Two fjords are compared for the
general radiolarian distribution, but with special emphasis on the
occurrence of J. rotatile in both sediment and plankton.