FIRST DISCOVERY OF LATE PALEOZOIC RADIOLARIANS IN THE EASTERN YAKUTIYA

Abstract

Some assemblages of Late Paleozoic radiolarians are first established in Yakutiya. The radiolarians occur in hemipelagic deposits reduced in thickness. They are extracted from siliceous tuffites by using the hydrofluoric acid and studied under a scanning electron microscope. In total, five radiolarian assemblages are detected: two Early Carboniferous assemblages with Albaillella cf. paradoxa and Albaillella indensis, two Early Permian assemblages with Latentifistula astricta and Spinodeflandrella cf. sinuata, and one Late Permian assemblage with Follicucullus cf. scholasticus. The most representative assemblage is that with Albaillella indensis of the Tournaisian-Visean. Three species of this assemblage (Albaillella paradoxa Deflandre, A. indensis Won, and A. uncus Won) are described.