Lufthunger

Cambrian: Upper and Middle - 530 to 495 Million Years Ago

Ordovician: Upper - 430 to 420 Million Years Ago

Devonian: Upper - 375 to 360 Million Years Ago

Permian: Upper - 258 to 245 Million Years Ago

Triassic: Upper - 229 to 205 Million Years Ago

Jurassic: Lower and Upper - 205 to 130 Million Years Ago

Cretaceous: Upper - 95 to 65 Million Years Ago

Tertiary: Oligocene and Eocene - 58 to 23 Million Years Ago