zygopleurahttp://www.oed.com/dictionary/zygopleura_n%3Ftab%3Dmeaning_and_usezygopleura, n.
First published 1921; not fully revised

zygopleuranoun

Biology.
  1. 1883–
    With plural agreement. Organic forms having bilateral symmetry, with either two or four antimeres or corresponding opposite parts (dipleura n., tetrapleura n. at tetrapleuron n. 2).
    1. 1883
      The Zygopleura include forms bilaterally symmetrical in the strictest sense, in which not more than two radial planes, and these at right angles to each other, are present. Haeckel again divides these, according to the number of antimeres, into Tetrapleura and Dipleura.
      P. Geddes in Encyclopædia Britannica vol. XVI. 844/2

zygopleura, n. was first published in 1921; not fully revised.

zygopleura, n. was last modified in December 2024.