FUSULINIDS FROM PISTON CORES, NORTHWIND RIDGE, AMERASIA BASIN, ARCTIC-OCEAN

Fusulinaceans from the flank of Northwind Ridge in the Arctic Ocean in dicate that this feature is underlain by miogeoclinal upper Paleozoic strata, and that the fauna belongs to the Middle Carboniferous through Early Permian Arctic Fusulinacean Province. This province stretched f rom the Canadian Arctic Islands eastward to Svalbard where it merged w ith the similar Ural Fusulinacean Province in the western Ural Mountai ns. Because these provinces did not extend into Siberia, the Northwind Ridge assemblage indicates that these rocks originally were adjacent to, or a part of, the Canadian Arctic Islands Carboniferous-Permian sh elf margin.