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But the Xiphosura have such close morphological relations with the Arachnida, and especially with the oldest known Arachnidan, Scorpio, that I cannot doubt the existence of a genetic connection between the two groups. On the other hand, the Branchiopoda do, even at the present day, almost pass into the true Podophthalmia, by Nebalia.
The latter minute animals, provided with six pairs of foliaceous feet, which chiefly belong to the fresh waters, and are diffused under similar forms over the whole world, quit the egg with their full number of limbs. "Therefore," says he, "I regard Nebalia as a Phyllopodiform Decapod."
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