1 / 28

GEOLOGIC TIME SCALE

GEOLOGIC TIME SCALE. PRECAMBRIAN ERA. 5,000 – 544 MYA. The beginnings of life, approximately 1,200 MYA. Single and multiple celled organisms-lived in water. Cyanobacteria. prokaryote, no nucleus. PALEOZOIC ERA. 544 - 245 MYA. The evolution of life in the sea and on land.

wilmer
Télécharger la présentation

GEOLOGIC TIME SCALE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GEOLOGIC TIME SCALE

  2. PRECAMBRIAN ERA • 5,000 – 544 MYA. • The beginnings of life, approximately 1,200 MYA. • Single and multiple celled organisms-lived in water.

  3. Cyanobacteria • prokaryote, no nucleus.

  4. PALEOZOIC ERA • 544 - 245 MYA. • The evolution of life in the sea and on land. • Divided into 7 Periods: Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian.

  5. Cambrian period • 544 – 505 MYA.

  6. Cambrian period • Great variety of marine invertebrates.

  7. Ordovician period • 438 – 505 MYA. • First fish began to appear.

  8. Silurian period • 408 – 438 MYA. • First land plants form.

  9. Coral • coral reefs & cephalopods abundant.

  10. Devonian period • 360 – 408 MYA. • First land dwelling creatures appear. • First amphibians.

  11. Devonian Ocean

  12. Mississippian period • 320 – 360 MYA. • Insects evolve. • First fully terrestrial creatures evolve.

  13. Pennsylvanian Period • 286 – 320 MYA. • Reptiles evolve.

  14. Pennsylvanian Period • Swampy, future coal beds.

  15. Permian period • 245 – 286 MYA. • Largest mass extinctions. 90-95% marine invertebrates became extinct. • Reptiles getting bigger and stronger.

  16. MESOZOIC ERA • “Age of the Dinosaurs” • 66 – 245 MYA. • Three periods: Cretaceous, Jurassic, Triassic.

  17. Triassic Period • 208 – 245 MYA. • First mammals. • Reptiles ruled.

  18. Jurassic Period • 144 – 208 MYA.

  19. Jurassic Period • Dinosaurs dominant.

  20. Jurassic Period • First birds begin to appear.

  21. Cretaceous Period • 66 – 144 MYA. • Last period of dinosaurs. • Largest dinosaurs.

  22. CENOZOIC ERA • Began at the extinction of the dinosaurs. • Present to 66 MYA. • Rise of the mammal.

  23. Tertiary Period • 1.5 – 66 MYA. • Flowering plants dominate. • Mammals dominate.

  24. Tertiary Period

  25. Quaternary Period • Present – 1.6 MYA.

  26. Quaternary Period • Evolution of humans.

  27. Human evolution

  28. Extinctions and Variations

More Related