Earth's Geological Timeline Quiz

During this eon, the moon began to form & there were constant meteors in the atmosphere

• Hadean Eon

• Archean Eon

• Proterozoic Eon

During this eon, bacteria appeared & there were many volcanoes erupting

• Hadean Eon

• Archean Eon

• Proterozoic Eon

During this eon, major ice ages were present & simple animals appeared

• Hadean Eon

• Archean Eon

• Proterozoic Eon

During this period, the first animals with shells & vertebrates appeared

• Cambrian Period

• Ordovician Period

• Devonian Period

During this period, the first fish with jaws & forests appeared

• Cambrian Period

• Ordovician Period

• Devonian Period

During this period, seeds developed & insects appeared

• Cambrian Period

• Ordovician Period

• Devonian Period

During this period, there were lots of tropical forests & giant insects appeared

• Carboniferous Period

• Permian Period

• Triassic Period

During this period, Pangea formed & the climate was very dry

• Carboniferous Period

• Permian Period

• Triassic Period

During this period, mammals & flying vertebrates appeared

• Carboniferous Period

• Permian Period

• Triassic Period

During this period, the first flowering plants & marine reptiles appeared

• Jurassic Period

• Cretaceous Period

• Cenozoic