File:Amphioxus Three stages in the gastrulation.jpg
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[edit]DescriptionAmphioxus Three stages in the gastrulation.jpg |
Fig. 59. — Three stages in the gastrulation of Amphioxus, seen in optical section. (After HATSCHEK,) A. Blastula with flattened vegetative surface; optical transverse section, B. Lower pole becomes invaginated into the blastocoel; optical transverse section. C. The invagination is completed and the blastocoel is obliterated; optical longitudinal section, |
Date | |
Source | https://archive.org/details/cu31924001026131/page/110/mode/1up?view=theater Amphioxus and the ancestry of the vertebrates. New York, London, Macmillan. |
Author | Willey, Arthur |
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current | 08:00, 24 March 2024 | ![]() | 1,259 × 421 (389 KB) | Rasbak (talk | contribs) | {{information |description=Fig. 59. — Three stages in the gastrulation of Amphioxus, seen in optical section. (After HATSCHEK,) A. Blastula with flattened vegetative surface; optical transverse section, B. Lower pole becomes invaginated into the blastocol; optical transverse section. C. The invagination is completed and the blastocoel is obliterated; optical longitudinal section, |date=1894 |source=https://archive.org/details/cu31924001026131/page/110/mode/1up?view=theater Amphioxus and the... |
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