Geological periods

C

• Cambrian‎ (3 C, 6 P)
• Carboniferous‎ (3 C, 6 P)
• Cretaceous‎ (4 C, 7 P)
• Cryogenian‎ (1 C, 8 P)

D

• Devonian‎ (4 C, 5 P)

E

• Ediacaran‎ (3 C, 46 P)

J

• Jurassic‎ (3 C, 4 P)

N

• Neogene‎ (2 C, 4 P)

O

• Ordovician‎ (6 C, 6 P)

P

• Paleogene‎ (4 C, 2 P)
• Permian‎ (3 C, 12 P)

Q

• Quaternary‎ (3 C, 14 P)

S

• Silurian‎ (4 C, 3 P)

T

• Triassic‎ (3 C, 10 P)

• Earth:Geological period

.

• Earth:System (stratigraphy)

B

• Earth:Boring Billion

C

• Earth:Calymmian
• Earth:Cambrian
• Earth:Carboniferous
• Earth:Cretaceous
• Earth:Cryogenian

D

• Earth:Devonian

E

• Earth:Ectasian
• Earth:Ediacaran

J

• Earth:Jurassic

N

• Earth:Neogene

O

• Earth:Ordovician
• Earth:Orosirian

P

• Earth:Paleogene
• Earth:Permian

Q

• Earth:Quaternary

R

• Earth:Rhyacian

S

• Earth:Siderian
• Earth:Silurian
• Earth:Statherian
• Earth:Stenian

T

• Earth:Tappan Spring
• Earth:Tonian
• Earth:Triassic