Definitions
from The Century Dictionary.
- Situated behind the prototroch: said of the position of cells or organs in the trochophore larva of marine annelids.
Etymologies
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Examples
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He found that if the similar anucleate "polar lobe" of this form is removed at the two-celled stage, deficient larvæ are formed, in which the post-trochal region and the apical organ are absent.
Form and Function A Contribution to the History of Animal Morphology
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