A member of the extinct class Placodermi of jawed fishes, known mainly from fossils of the Silurian and Devonian periods, having the head and…
| 单词 | θ36644 |
| 释义 | the world > animals > fish > superclass Agnatha > [noun] > class Chondrichthyes > member of Placodermata (1) placoderm1859 A member of the extinct class Placodermi of jawed fishes, known mainly from fossils of the Silurian and Devonian periods, having the head and… |
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