EPSC 201 Lecture Notes - Lecture 2: Plate Tectonics, Global Cooling, Carboniferous
20 Jul 2016
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Size: the middle paleozoic: silurian and devonian life o at the end of the devonian, the first amphibians appeared on land, walking on legs and breathing with lungs o a fossil transitional between fish and amphibians was discovered in 1996. Tiktaalik was a lobe finned dish that could do pushups and look around on a swivel jointed neck: late paleozoic era o global cooling and regressing seas initially o epicontinental seas replaced with coastal swamps. Thrust faults emplaced precambrian basement atop paleozoic sedimentary rocks o rocks across north american continent were impacted: late paleozoic era o largest mas extinction event at end of permian period o >95% of marine species disappeared o possibly related to intense volcanism. By the jurassic, a narrow north atlantic existed: mesozoic era: life evolution o mesozoic era: the age of dinosaurs and reptiles o triassic.
