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Blastoid

Blastoid

Extinct class of marine invertebrates.

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  1. Echinoderm

    Marine phylum of animals often with radial symmetries.

    27%

  2. Crinoid

    Class of echinoderms.

    27%

  3. Blastozoa

    Subphylum of marine invertebrates.

    16%

  4. Pentremites

    Extinct genus of marine invertebrates.

    11%

  5. Cystoidea

    Class of extinct echinoderms.

    8.5%

Readers come from

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  1. Permian–Triassic extinction event

    Earth's most severe extinction event.

    79%

  2. Echinoderm

    Marine phylum of animals often with radial symmetries.

    4.9%

  3. Blastozoa

    Subphylum of marine invertebrates.

    4%

  4. Crinoid

    Class of echinoderms.

    2.7%

  5. Starfish

    Class of echinoderms, marine animal.

    2.3%

  6. Cystoidea

    Class of extinct echinoderms.

    2.2%

  7. Mammoth Cave National Park

    National park in Kentucky, United States.

    1.1%

  8. Deltoblastus

    Extinct genus of marine invertebrates.

    1.1%

  9. Carboniferous

    Fifth period of the Paleozoic Era.

    0.88%

  10. Eocrinoidea

    Class of echinoderms.

    0.62%