- Trías Period
- Háskólastigi Period
- Spring (árstíð)
- Silurian Period
- Nýleg Epoch
- Qórgildu Period
- Precambrian Time
- Pliocene Epoch
- Permian Period
- Pennsylvania Pennsylvania Period
- Paleogene Period
- Paleocene Epoch
- Ordovician Period
- Oligocene Epoch
- Neogene Period
- Miocene Epoch
- Jurassic Period
- Epoch ( Jarðfræði )
- Eocene Epoch
- Devonian Period