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15 Cards in this Set

  • Front
  • Back
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
363mya - mississippian, pennsylvanian
forests of vascular plants
first reptiles, seed plants
amphibians dominant
permian
290mya
permian mass extinction
radiation of reptiles
origin of mammal-like reptiles and insects
triassic
245mya
gymnosperms dominate
dinosaurs
jurassic
206mya
gymnosperms dominant
dinosaurs abundant and diverse
cretaceous
144mya
angiosperms appear
cretaceous extinctions
paleocene
65mya
major radiation of mammals, birds, pollinating insects
eocene
57mya
angiosperms dominate
mammals radiate
oligocene
35mya
origins of primates (apes)
miocene
23mya
radiation of mammals and angiosperms
pliocene
5mya
apelike ancestors of humans appear
pleistocene
1.8mya
ice ages, humans appear