THE PALEOZOIC ERA By: Andrés Fajardo, Mauricio Buendía, Álvaro Vivas, and Juanita González.
Dec 14, 2015
• The Paleozoic Era was the first geological age of the Phanerozoic Eon.
• It began about 570 million years ago and ended about 230 million years ago.
• It was characterized by having massive extinctions and marine habitats.
There were 6 main periods
• Those Were:• Cambrian period• Ordivician period• Silurain period• Davonian period• Carboniferus period • Permian period.
Cambrian Period• An « explosion of life » ocurred
• Multi cellular organisms• Organisms developed hard body
parts: Shells and body skeletons• Marine habitats were created
Ordovician Period
• Marine habitats continued evolving • Great diversity of animals: A lot of invertebrates vertebrates began their
evolution
Silurian period444-416 millions years ago.
•Creation of Tropical habitats occurred
• 1st fish with true jaws appeared
Devonian period416-359 Million Years ago
Vertebrates and invertebrates on the sea
Fishes: with jaws bony skeletons and scales
Plants appeared on dry areas
Carboniferous Period 359-299 Million years ago.
• A Lot of habitats developed• Amphibians, insects and land plants
adapted more• Vertebrates
Insects
• Insects Plants
Permian period359-299 million years ago
• Invertebrates and • vertebrates expanded +++++…..• Reptiles• ancestors
• Modern reptiles mammals
• dinosaurs
• Finally…………………..• Ended 230 millionyears ago• It was a massive extinction---------96%
of ocean species became extinct.
• The shells or coverings of the animals of this era made them fofossilize much more easily.