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GEPHYREA

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Originally appearing in Volume V11, Page 761 of the 1911 Encyclopedia Britannica.
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GEPHYREA , the name used for several See also:

groups of See also:worm-like animals with certain resemblances but of doubtful See also:affinity. In the See also:article " See also:Annelida " in the 9th edition of this See also:Encyclopaedia, W. C. McIntosh followed the accepted view in associating in this See also:group the Echiuridae, Sipunculidae and Priapulidae. E. See also:Ray Lankester, in the See also:preface to the See also:English See also:translation of C. See also:Gegenbaur's See also:Comparative See also:Anatomy (1878), added the Phoronidae to these forms. Afterwards the same author (article " See also:Zoology," Ency. Brit., 9th ed.) recognized that the Phoronidae had other See also:affinities, and placed the other " gephyreans " in association with the See also:Polyzoa as the two classes of a phylum Podaxonia. In the See also:present See also:state of knowledge the old group Gephyrea is broken up into See also:Echiuroidea (q.v.) or Gephyreaarmata, which are certainly Annelids; the See also:Sipunculoidea (q.v.) or Gephyrea achaeta, an See also:independent group, certainly coelomate, but of doubtful affinity; the See also:Priapuloidea (q.v.), equally of doubtful affinity; and the See also:Phoronidea (q.v.), which are almost certainly Hemichordata.

End of Article: GEPHYREA

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