Type
Zone
Age range
168.3–167.3 Ma
Middle Jurassic
Bathonian
Bajocian
Procerites progracilis
Zigzagiceras zigzag
Parkinsonia parkinsoni
168.3168.3168.2168.2168.1168.1168.0167.9167.9167.8167.8167.8167.7167.7167.6167.6167.5167.4167.4167.3167.3