Genus Biannulatisphaerites

Species total:
3
Age range:
345 - 230 MA (obsolete dating)
IRMNG:
find
Name From To Age range
Biannulatisphaerites Tournaisian Visean
Biannulatisphaerites simplex Early Carboniferous Visean
Biannulatisphaerites sp Artinskian Changhsingian