What does placodermi mean?

Definitions for placodermi

Here are all the possible meanings and translations of the word placodermi.

Princeton's WordNet

  1. Placodermi, class Placodermi(noun)

    extinct group of bony-plated fishes with primitive jaws

Webster Dictionary

  1. Placodermi

    an extinct group of fishes, supposed to be ganoids. The body and head were covered with large bony plates. See Illust. under Pterichthys, and Coccosteus

  2. Origin: [NL., fr. Gr. pla`x, plako`s, a tablet + de`rma skin.]


  1. Placodermi

    Placodermi is an extinct class of armoured prehistoric fish, known from fossils, which lived from the late Silurian to the end of the Devonian Period. Their head and thorax were covered by articulated armoured plates and the rest of the body was scaled or naked, depending on the species. Placoderms were among the first jawed fish; their jaws likely evolved from the first of their gill arches. A 380-million-year-old fossil of one species represents the oldest known example of live birth. The first identifiable placoderms appear in the fossil record during the late Llandovery epoch of the early Silurian; they began a dramatic decline during the Late Devonian extinctions, and the class was entirely extinct by the end of the Devonian.


  1. Chaldean Numerology

    The numerical value of placodermi in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of placodermi in Pythagorean Numerology is: 6

Images & Illustrations of placodermi

  1. placodermi


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"placodermi." Definitions.net. STANDS4 LLC, 2018. Web. 21 Feb. 2018. <https://www.definitions.net/definition/placodermi>.

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