Global Distribution of the Fusulinacean Genus Biwaella

The Late Pennsylvanian-Cisuralian fusulinacean genus Biwaella Morikawa et Isomi, 1960 has been described from a number of tropical to subtropical Tethyan and Peri-Gondwanan localities along with sparse occurrences from the Boreal and Midcontinent-Andean faunal provinces. The present study provides a synthesis of the known global distribution and migratory timescales of Biwaella and describes the first occurrence of B. americana Skinner et Wilde, 1965 from Nevada, USA.