GeologyRocks

The first period of the Mesozoic. Spans 251-199Ma. It is split into three epochs:

• Upper: 228-199Ma
• Middle: 245-228Ma
• Lower: 251-245Ma

These are split into:

• Rhaetian: 203-199Ma
• Norian: 216-203Ma
• Carnian: 228-216Ma
• Ladinian: 237-228Ma
• Anisian: 245-237Ma
• Olenekian: 249-245Ma
• Indua: 251-249Ma