Sarcopterygii

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Gogonasus

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Eusthenopteron

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  • Fossil.
    Fossil.

Panderichthys

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Tiktaalik

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  • Note: This image is outdated. The first tetrapods were solely aquatic.
    Note: This image is outdated. The first tetrapods were solely aquatic.
  • Chasing smaller fishes.
    Chasing smaller fishes.

Anatomy

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  • Tiktaalik fin.
    Tiktaalik fin.
  • Tiktaalik skull.
    Tiktaalik skull.
  • Tiktaalik skeleton.
    Tiktaalik skeleton.
  • Comparison between fins of Tiktaalik, Panderichthys and Eusthenopteron, compared to the legs of 2 tetrapods ( Acanthostega and Ichthyostega ).
    Comparison between fins of Tiktaalik, Panderichthys and Eusthenopteron, compared to the legs of 2 tetrapods ( Acanthostega and Ichthyostega ).
  • Comparison betwwen fins and legs of several Sarcopterygii'n fishes and some tetrapods.
    Comparison betwwen fins and legs of several Sarcopterygii'n fishes and some tetrapods.
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