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Jurassic

Hierarchy:Phanerozoic Mesozoic
  Jurassic
Classification:Period (as per International Commission on Stratigraphy)
Top:~145.0 Ma
Base:201.3 ± 0.2 Ma
Preceeds:Cretaceous Early Cretaceous  Berriasian
Follows:Triassic Late Triassic  Rhaetian
Primary Divisions:Late JurassicMiddle JurassicEarly Jurassic
FGDC code:J
Gymnosperms (especially conifers, Bennettitales and cycads) and ferns common. Many types of dinosaurs, such as sauropods, carnosaurs, and stegosaurs. Mammals common but small. First birds and lizards. Ichthyosaurs and plesiosaurs diverse. Bivalves, Ammonites and belemnites abundant. Sea urchins very common, along with crinoids, starfish, sponges, and terebratulid and rhynchonellid brachiopods.

Breakup of Pangaea into Gondwana and Laurasia.

Nevadan orogeny in North America. Rantigata and Cimmerian Orogenies taper off.

Atmospheric CO2 levels 4–5 times the present day levels (1200–1500 ppmv, compared to today's 385 ppmv).
 

Geologic Events

Event NameTypeAgeArea
Morokweng impactImpact Event145.0 ± 0.8 MaSouth Africa
Pangaea breakup (begins)Continental Breakup175 - 55 MaGlobal
Andean orogeny (begins)OrogenyMaximum Age: 200 MaSouth America
Laurasia supercontinent (ongoing)Supercontinent215 - 55 MaNorthern Hemisphere
Uralian orogeny (concludes)Orogeny~320 - ~175 MaRussia


Overview of geological time

List all geological events
Mineral and/or Locality  
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