Q 01/05

The Jurassic Period is named after which mountain range on the France-Switzerland border?

A) The Vosges

B) The Dolomites

C) The Jura Mountains

D) The Pyrenees

Answer · why

C) The Jura Mountains

Alexander von Humboldt named the limestone there Jura-Kalkstein in 1799; Alexandre Brongniart coined 'terrains jurassiques' in 1829.

Q 02/05

Which period came immediately before the Jurassic?

A) The Permian

B) The Cretaceous

C) The Triassic

D) The Devonian

Answer · why

C) The Triassic

The Jurassic began about 201.4 million years ago with the end-Triassic mass extinction.

Q 03/05

Which period followed the Jurassic?

A) The Triassic

B) The Cretaceous

C) The Paleogene

D) The Carboniferous

Answer · why

B) The Cretaceous

The Jurassic-Cretaceous boundary is the only boundary between geological periods still formally undefined.

Q 04/05

Roughly how long did the Jurassic Period last?

A) About 250 million years

B) About 58 million years

C) About 120 million years

D) About 6 million years

Answer · why

B) About 58 million years

It ran from around 201.4 to 143.1 million years ago.

Q 05/05

The Jurassic is the middle period of which era?

A) The Mesozoic

B) The Cenozoic

C) The Proterozoic

D) The Paleozoic

Answer · why

A) The Mesozoic

It is also counted as the eighth period of the Phanerozoic Eon.