Evolution of Fish

By mgxlrg
  • 530 BCE

    Cambrian Period

    530 million years ago. Pikaia is the oldest vertebrate. Haikouichthys is a fish with no jaw. Myllokunmingia is the first animal with gills.
  • 485 BCE

    Ordovician Period

    485 million years ago. There were many fish with no jaw. Astraspis and Arandaspis are fishes with big heads. They look like big tadpoles.
  • 443 BCE

    Silurian Period

    443 million years ago. Placoderms were fishes with jaws. They eat small fishes.
  • 419 BCE

    Devonian Period

    419 million years ago. There were a lot of placoderms. Osteichthyans were bony fishes.
  • 358 BCE

    Permian Period

    358 million years ago. There were a lot of sharks like the Stethacanthus that ate smaller fishes.
  • 252 BCE

    Mesozoic Era

    252 million years ago. Leedsichthys is a big fish. There are fossils of it found.
  • 66 BCE

    Cenozoic Era

    66 million years ago. The megalodon is a big shark that is alive during this time.

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