V2EX placoderm

Placoderm

Definition / 释义

(古生物)盾皮鱼;一种已灭绝的有颌鱼类类群,特点是头部和前躯干覆盖厚重的骨质装甲,主要生活在泥盆纪的海洋与淡水环境中。

Pronunciation / 发音

/plkdrm/

Examples / 例句

The museum has a placoderm fossil on display.
博物馆展出了一块盾皮鱼化石。

Because placoderms had bony armor and early jaws, they are often used to explain key steps in vertebrate evolution during the Devonian period.
由于盾皮鱼具有骨质装甲和早期的颌结构,它们常被用来讲解泥盆纪时期脊椎动物进化中的关键阶段。

Etymology / 词源

来自希腊语词根 *plak-*(“板、扁平的片”)+ *derm-*(“皮肤”),字面意思是“板状皮肤”,指其外部如铠甲般的骨板覆盖。

Related Words / 相关词

Literary Works / 文学与著作例证

  • Vertebrate Paleontology(Michael J. Benton):在介绍早期有颌类与泥盆纪鱼类辐射时频繁提到 placoderm。
  • The Rise of Fishes: 500 Million Years of Evolution(John A. Long):以 placoderm 作为“装甲鱼类”代表,讨论鱼类演化与生态扩张。
  • Your Inner Fish(Neil Shubin):在谈及脊椎动物身体结构与远古鱼类演化背景时会提到 placoderms(盾皮鱼类)作为重要参照。
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