Canadoceras kossmati
Matsumoto
(scale: 5 cm)
| Locality: Akatsiya River (tributary
of the Makarov R.), Sakhalin, Russia Horizon: Lower part of the Krasnoyarka Formation (Lower Campanian) |
| Late Cretaceous ammonite inhabited
the North Pacific Ocean. Diagnostic of the Lower Campanian in the Circum
North Pacific Realm. Grow up to one meter in diameter. |