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15 Cards in this Set
- Front
- Back
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Precambrian Eon
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6/7th of the earths geological history , age of blue and green algae, as well as other prokaryotic organisms
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Ordivician Period
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bryozoans vertebrates graptolites
trilobites reached their peak |
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silurian period
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first land plants, evolution of bone
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Devonian period
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age of the fish huge diversity of fish
evolution of vertibrate jaw |
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Mississipian period
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explosion of land flora, ferns and lycopods
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Pennsylvania period
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flora and fauna more diverse than Missippian era. sharks insects amphibians firs reptiles
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permian period
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decline in many groups
major extinctions of many invertabrates |
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Meszoic era
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age of reptiles diversification of reptiles
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triassic period
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first dinsaurs turtles lizards, crocs first appear. mammal like reptiles
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Jurassic period
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rise of the great dinsaurs. first flying reptiles and brids
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cretaceous period
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marine reptiles at theri peak,
bivalves at their peak. bony fishes at peak |
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cretaceous cont'd
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mammals first appeared, many dinosaurs extinct
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cenozoic era
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65mya to present day
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tertiary period
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age of mammals
pliocene miocene oligocene econcene paleocene |
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quaternary period
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plestocene:human evolution, ice age
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