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Section 17. the Anus Is Perforated Later Near the Region Occupied At

Text Book of Biology, Part 1: Vertebrata · H. G. Wells — chapter 224 of 285 · ~35 words · public domain

this stage by the blastopore. Hence the anterior end of the future amphioxus, the head end, is pointing towards the Figure 6, and the letters ep. are marked on the side which will be dorsal.

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