geologic times 2
Terms
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- cambrian
-
543mya
radiation of most modern animal phyla (cambrian explosion) - ordovician
-
510mya
marine algae abundant; colonization of land by plants and arthropods - silurian
-
439mya
diversity of jawless fishes, first jawed fishes; diversification of early vascular plants - devonian
-
409mya
diversification of bony fishes
first amphibians and insects - carboniferous
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363mya - mississippian, pennsylvanian
forests of vascular plants
first reptiles, seed plants
amphibians dominant - permian
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290mya
permian mass extinction
radiation of reptiles
origin of mammal-like reptiles and insects - triassic
-
245mya
gymnosperms dominate
dinosaurs - jurassic
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206mya
gymnosperms dominant
dinosaurs abundant and diverse - cretaceous
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144mya
angiosperms appear
cretaceous extinctions - paleocene
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65mya
major radiation of mammals, birds, pollinating insects - eocene
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57mya
angiosperms dominate
mammals radiate - oligocene
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35mya
origins of primates (apes) - miocene
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23mya
radiation of mammals and angiosperms - pliocene
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5mya
apelike ancestors of humans appear - pleistocene
-
1.8mya
ice ages, humans appear