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Ostracoderm

Ostracoderm

Armored jawless fish of the Paleozoic.

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Readers' pathsAug 2026 – Oct 2026

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Share of the 2,738 clicks on its links

  1. Osteostraci

    Extinct class of jawless fishes.

    11%

  2. Anaspida

    Group of extinct jawless vertebrates.

    10%

  3. Agnatha

    Paraphyletic infraphylum of fish.

    10%

  4. Pteraspidomorpha

    Extinct class of jawless fishes.

    7.5%

  5. Galeaspida

    Class of chordates.

    7.1%

  6. Thelodonti

    Extinct class of jawless fishes.

    7%

  7. Pituriaspida

    Extinct family of jawless fishes.

    4.6%

  8. Cyclostomi

    Superclass of jawless fishes.

    4.5%

  9. Cephalaspidomorphi

    Extinct class of jawless fishes.

    3.7%

  10. Cephalaspis

    Genus of extinct jawless fish.

    3.4%

Readers come from

Share of the 3,081 readers arriving from another article

  1. Sacabambaspis

    Extinct genus of jawless fishes.

    23%

  2. Evolution of fish

    Origin and diversification of fish through geologic time.

    11%

  3. Silurian

    Third period of the Paleozoic Era.

    10%

  4. Agnatha

    Paraphyletic infraphylum of fish.

    9.5%

  5. Fish

    Gill-bearing non-tetrapod aquatic vertebrates.

    5.3%

  6. Devonian

    Fourth period of the Paleozoic Era.

    4.1%

  7. Osteostraci

    Extinct class of jawless fishes.

    4%

  8. Ordovician

    Second period of the Paleozoic Era.

    3.9%

  9. Placoderm

    Extinct paraphyletic class of fishes.

    3.3%

  10. Fish scale

    Hard skeletal covering of fish.

    3.2%