A fish of the former order Placoidei of cartilaginous fishes, which included sharks and rays; a placoid fish.
| 单词 | θ36723 |
| 释义 | the world > animals > fish > subclass Elasmobranchii > [noun] > member of division Placoidei (2) placoidean1836 A fish of the former order Placoidei of cartilaginous fishes, which included sharks and rays; a placoid fish. placoid1845 Zoology. = placoidean, n. |
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