Mention at least four important affinities between Hemichordates and annelids.

Hemichordates and annelids share several affinities, which suggest a degree of evolutionary relationship between these two phyla. 

1. Body Segmentation: Both Hemichordates and annelids exhibit body segmentation, although the nature and extent of segmentation differ. In annelids, segmentation is clearly visible throughout the body, contributing to a well-organized structure. Similarly, Hemichordates, particularly in the class Enteropneusta, show a segmented body plan, with _________ _________ __________ _____ ___ ___ _______ _______.
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