Partial small subunit ribosomal DNA (SSU rDNA) sequence analysis was used to determine the phylogenetic position and genetic diversity of the arborescent agglutinated foraminifer Notodendrodes hyalinosphaira. Our results show that N. hyalinosphaira is closely related to N. antarctikos, a co-occurring arborescent species. In all phylogenetic analyses employed, both species branched within a well...

To document the evolution of the early cryosphere, stable isotope analyses were conducted on the planktonic and benthic foraminifers from Ocean Drilling Program Site 1218. We generated two parallel 54m-long records at 10-cm resolution and thus produced a standard Pacific stable isotope reference curve for the 26.4to 30.0-Ma interval within the Oligocene. These data are necessary to document the...

Abstract. Foraminifera are unicellular organisms that play an important role in marine organic matter cycles. Some species able to isolate chloroplasts from their algal food source and incorporate them as kleptoplasts into own metabolic pathways, a phenomenon known kleptoplastidy. One showing this ability is Elphidium excavatum, common foraminifer the Kiel Fjord, Germany. The Fjord fed by sever...

Planulina ornata (d'Orbigny), a coarsely perforate species of foraminifera having a low trochospiral test, was recovered attached to phosphatic hardgrounds from the lower oxygen-minimum zone off Peru. Above the base of individual pores are calcified, perforate sieve plates, the largest so far described. Structure of the pores suggests a possible association with mitochondria and respiratory fun...