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noun
any of numerous fishes of the extinct order Arthrodira, widely distributed during the Devonian Period, having the anterior part of the body covered by a shield of bony plates.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Arthrodire
is always a great word to know.
So is callithumpian. Does it mean:
| a scrap or morsel of food left at a meal. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
Encyclopedia Britannica
Encyclopedia
arthrodire
any member of an order of extinct, armoured, jawed fishes (placoderms) found in Devonian freshwater and marine deposits. (The Devonian period lasted from 416 million to 359 million years ago.) Early arthrodires, such as the genus Arctolepis, were well-armoured fishes with flattened bodies. They had hollow, backward-curved shoulder spines and may have used the long spines to anchor themselves or to move about on the bottom.
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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