Meaning Of The Word Placoderm

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Placoderm Meaning

Placoderm Definition
Placoderm Definition

What's The Definition Of Placoderm?

placoderm in American English
noun: any of various extinct jawed fishes of the class Placodermi, dominant in seas and rivers during the Devonian Period and characterized by bony armored plates on the head and upper trunk

placoderm in British English
noun: any extinct bony-plated fishlike vertebrate of the class Placodermi, of Silurian to Permian times: thought to have been the earliest vertebrates with jaws

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