Online Encyclopedia

BRACHIOPODA

Online Encyclopedia

Originally appearing in Volume V04, Page 360 of the 1911 Encyclopedia Britannica.

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BRACHIOPODA , an important and well-defined but extremely isolated class of invertebrates . The

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GROUP

group may be defined as follows: Sessile solitary Coelomata with bivalved shells usually of unequal

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SIZE

size and arranged dorso-ventrally . The

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head is produced into ciliated arms bearing tentacles . They reproduce sexually, and with doubtful exceptions are of

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SEPARATE

separate sexes . The name Brachiopod ((3pax1cov, an

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ARM (a common Teutonic word; the Indo-European root is ar, to join or fit; cf. the Lat. armus, shoulder, and the plural word arma, weapons, Gr. apphs, joint, and the reduplicated apapilKSV, to join)

arm, and 7rous, 7roSbs, a

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FOOT

foot) was proposed for the class by F .

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CUVIER, GEORGES LEOPOLD CHRETIEN FREDERIC DAGOBERT, BARON (1769-1832)

Cuvier in 18o5, and by A . M . C . Dumeril in 1809, and has since been very extensively adopted .

End of Article: BRACHIOPODA

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