Eras

Jurassic

juu-RASS-ik

Citation Formats

General Reference

Earth and Environment Atlas. "Jurassic." Accessed August 30, 2026. https://earth.interactiveatlas.org/eras/jurassic.

APA Style

Earth and Environment Atlas. (n.d.). Jurassic. Retrieved August 30, 2026, from https://earth.interactiveatlas.org/eras/jurassic

BibTeX

@misc{earthandenvironmentatlas-jurassic,
  author = {Earth and Environment Atlas},
  title = {Jurassic},
  year = {2026},
  url = {https://earth.interactiveatlas.org/eras/jurassic},
  note = {Accessed August 30, 2026}
}

The middle period of the Mesozoic, named for the Jura Mountains, whose limestone strata were formed in this period's shallow seas. The dinosaurs it is most associated with in popular imagination reached some of their largest sizes here.

Facts

Rank

Period 1

Start (Million Years Ago)

201.4 1

Cited article gives 201.4 plus or minus 0.2 Mya.

End (Million Years Ago)

145 1

Key Event

The middle period of the age of dinosaurs, between the Triassic and the Cretaceous. 1

Cross-Tradition Connections

In Discipline

Geochronology

Source Geologic Time Scale (Wikipedia)

Part Of

Mesozoic

Source Geologic Time Scale (Wikipedia)

Sources

1. Geologic Time Scale (Wikipedia)

Wikimedia FoundationView the Source

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