Swedish Museum of Natural History

Quaternary Arctic planktonic foraminifera: morphological differentiation and taxonomic reassessment of subpolar spinose taxa

Abstract. Planktonic foraminifera in the modern Arctic Ocean are dominated by the non-spinose polar species Neogloboquadrina pachyderma. Acmes of two spinose, presumed subpolar taxa in Quaternary central Arctic sediment cores are therefore anomalous, implying significantly differ...

Global proliferation of opportunistic pleuromeian lycopsids following the disappearance of the end-Triassic forests

Abstract Environmental crises and mass extinction events on land are typically followed by ecological upheaval, during which opportunistic plants rapidly colonize devastated landscapes, forming transient ‘pioneer’ communities that precede the establishment of complex forest ecosy...