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Updated: May 13, 2025
A "true and natural system" of the Crustacea to be in accordance with the sequence of the phenomena would have to take into account in the first place the various modes of segmentation, then the position of the embryo, next the number of limbs produced within the egg and so forth, and might be represented somewhat as follows: Sub-class I. HOLOSCHISTA. Segmentation complete. No primitive band.
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