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1 result for “Thyrostraca”
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Britannica 11th
Encyclopaedia Britannica · 11th edition
Thyrostraca
Britannica 11thTHYROSTRACA, an order of Crustacea, comprising barnacles, acorn shells and some allied degenerate parasites. The embryos are free-swimming, active forms, but in adult life the animals are fixed head downwards, and are very degenerate. The body is indistinctly ...
Vol. 26, pp. 905-905
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