The Jurassic Period Julia Savage, Kate Mickley, Madison Thelen

"Jurassic" from area where rocks of this time were first studied

199.6 MYA to 145.5 MYA

Mesozoic Era & Phanerozoic Eon


  • Early = Lias
  • Middle = Dogger
  • Late = Malm

Early Jurassic

  1. Pangaea broke apart
  2. Movement + warmer temperatures = diversification
  3. Reptiles dominate

Animal Life:

Allosaurus: Carniverous predators

First bird appeared: Archaeopteryx 150 MYA

Very close to reptile

Giant Sauropods

Largest Dinosaur

Sorry! No T- Rexes yet!


  • "Lizard fish"
  • Predatory marine animals
  • Developed into many fish species

First small mammals appeared



Not actually palm trees or flowering plants as usually pictured

Mostly ferns, ginkgoes, and cyads

Very few conifers


  • Mountains rose on sea floor=higher water level on land
  • Turned climate from hot-dry to hot-humid
  • No polar ice caps
  • Very high carbon dioxide levels

Oldest existing sea floor is from Jurassic

The End:

Mass extinction- more than 80% of marine life

Exact cause not known

Believed to be excessive methane

Works Cited

"BBC Nature - Jurassic Period Videos, News and Facts." BBC News. BBC. Web. 16 Mar. 2017.

Futurity. "Jurassic Mammals Were Picky about Their Grub." Holy Kaw! 26 Aug. 2014. Web. 16 Mar. 2017.

"Jurassic Period." Jurassic Period. Web. 16 Mar. 2017.

"Jurassic Period." Encyclopædia Britannica. Encyclopædia Britannica, Inc. Web. 16 Mar. 2017.

"Jurassic Period - A Haiku Deck by Sarah Onks." Presentation Software. Web. 16 Mar. 2017.

"The Jurassic Period - Jurassic Dinosaurs." The Jurassic Period - Jurassic Dinosaurs. Web. 16 Mar. 2017.

Society, National Geographic. "Jurassic Period Article, Dinosaurs Information, Prehistoric Facts." National Geographic. Web. 16 Mar. 2017.

Writer, Leaf Group. "The Climate in the Jurassic Era." Sciencing. Leaf Group. Web. 16 Mar. 2017.

Bingo Hogpen, Marcus Gawkroger, Caramella Diggle, Tolman Grubb, Estella Took-took, Amethyst Gamgee, Bilcuzal Burrowes, Menegilda Bolger-Baggins, Andwise Zaragamba, and Fastolph Brandybuck. Earth Science. Web. 16 Mar. 2017.


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