Type
Zone
Age range
139–138.5 Ma
Early Cretaceous
Berriasian
Paratollia/Platylenticeras
Peregrinoceras albidum
Surites stenomphalus
139.02139.00138.98138.96138.94138.92138.90138.88138.86138.84138.82138.80138.78138.76138.74138.72138.70138.68138.66138.64138.62138.60138.58138.56138.54138.52138.50138.48