Type
Zone
Age range
73.27–72.2 Ma
Late Cretaceous
Maastrichtian
Campanian
Baculites baculus
Baculites eliasi
Baculites jenseni
73.373.373.273.273.173.073.073.072.972.872.872.872.772.772.672.572.572.572.472.372.372.372.2