Gastropod Segmentation

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“Diagram of early segmentation stages in a Gasteropod. A, 2-celled stage; B, 4-celled; C, 8-celled; D, later stage, in section. ect., ectoderm cells (micromeres); ent., entoderm cells, macromeres; mes., mesoblasts, early put aside,--before gastrulation--to form the mesoderm; mi., micromeres; ma., macromeres.” -Galloway, 1915

Keywords

gastropod segmentation, gasteropod segments, mollusc early segments, mollusk cells, gastrulation, micromeres, macromeres

Galleries

Snails and Slugs

Source

Thomas Walton Galloway Textbook of Zoology (Philadelphia, PA: P. Blakiston's Son & Co., 1915)

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