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19 Cards in this Set

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  • Back
  • 3rd side (hint)
Origin of life
Hadean (3.6 GA)
Precambrian
First evidence for life
Archaean (3.4 GA)
Precambrian
Evidence for oxygenic photosynthesis
Proterozoic (2.2 GA)
Precambrian
First eukaryotes
Proterozoic (1.5 GA)
Precambrian
First animals (soft bodied)
Late Proterozoic (550 MY)
Precambrian
First animals (hard parts)
Cambrian (540 MY)
Paleozoic
First chordates
Cambrian (525 MY)
Paleozoic
First jawless fish
Ordovician (470 MY)
Paleozoic
First fungi
Ordovician (450 MY)
Paleozoic
First land plants
Ordovician (440 MY)
Paleozoic
First bony fish
Silurian (410 MY)
Paleozoic
First insects
Devonian (400 MY)
Paleozoic
First seed plants (gymnosperms)
Devonian (360 MY)
Paleozoic
First reptiles
Carboniferous (340 MY)
Paleozoic
First dinosaurs
Triassic (220 MY)
Mesozoic
First mammals
Jurassic (200 MY)
Mesozoic
First birds
Jurassic (130 MY)
Mesozoic
First flowering plants (angiosperms)
Cretaceous (110 MY)
Mesozoic
Earliest homonids
Pliocene (3.2 MY)
Cenozoic