Science quiz
Geological periods in order
Twelve periods cover the last 539 million years. Sort them from the oldest to the one we live in.
- Format
- Put them in order
- Items
- 12 to sort
- Limit
- None
- Level
- Hard
- Checked
- 2026.10.03
See every entry and put the whole list in order.
- Entries
- 12
- Sort by
- Began
- Time limit
- None
- Touch screens start in Tap mode: tap the entries in order, and tap one again to take it back.
- Drag mode: drag an entry (press and hold on a phone), or use the arrow buttons.
- Keyboard: space to pick up, arrows to move, space to drop.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
About this quiz
Geologists divide the Phanerozoic eon, the last 539 million years, into twelve periods grouped in three eras: the Paleozoic, the Mesozoic and the Cenozoic.
- The Triassic, Jurassic and Cretaceous make up the Mesozoic era.
- The Paleogene began 66 million years ago, at the start of the Cenozoic.
- We live in the Quaternary, which began 2.58 million years ago.
- The Cretaceous is the longest of the twelve, lasting about 77 million years.
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