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anaspid

/ˈæn.ə.spɪd/

翻译: 无颌类甲胄鱼的一类,生活在志留纪和泥盆纪的淡水环境,通常具有歪形尾和覆盖头部的骨甲。

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noun

/ˈæn.ə.spɪd/C2formalscientific
  • zh无颌类甲胄鱼的一类,生活在志留纪和泥盆纪的淡水环境,通常具有歪形尾和覆盖头部的骨甲。

An extinct, small, freshwater jawless fish from the Silurian and Devonian periods, typically characterized by a heterocercal tail and an armored head.

  1. Extinct jawless fishC2formalscientific

    An extinct small freshwater jawless fish from the Silurian and Devonian periods, typically having a heterocercal tail and an armored head.

    zh已灭绝的无颌鱼

    • The anaspid is known only from fossil remains found in ancient lakebeds.
    • Paleontologists study the anaspid to understand early vertebrate evolution.
    • Unlike modern fish, the anaspid had a heavily armored head.
    • Fossils of the anaspid are often found in Silurian rock formations.