北海道東部浦幌地域の暁新統から産出する珪藻化石群集

抄録

Paleocene diatoms are reported from a calcareous concretion in the Urahoro area, eastern Hokkaido, Japan. Although poorly preserved, the assemblage is predominantly composed of both Hemiaulus spp. and diverse resting spores, associated with Stephanopyxis spp. This study represents the first record of Paleocene diatoms in the Northwestern Pacific region and, therefore, is key to gaining a deeper insight into the regional chronology and global biogeography.