File:Crepidula ectoblasts completely enclose the egg.jpg

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Description MODEL 18 The ectoblasts completely enclose the egg, leaving only a narrow pore (blastopore), about which is seen a depression. The derivation of ectoblasts from the three quartets indicated on the models by the coloring. The various regions of the future larva are becoming more sharply defined.
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Source https://archive.org/details/americanmuseumjo06amer/page/47/mode/1up?view=theater THE AMERICAN MUSEUM JOURNAL, VOLUME VI, 1906 NEW YORK: PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY 1906
Author EDMUND OTIS HOVEY, Editor

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current14:58, 9 March 2024Thumbnail for version as of 14:58, 9 March 2024764 × 866 (470 KB)Rasbak (talk | contribs){{Information |description=MODEL 18 The ectoblasts completely enclose the egg, leaving only a narrow pore (blastopore), about which is seen a depression. The derivation of ectoblasts from the three quartets indicated on the models by the coloring. The various regions of the future larva are becoming more sharply defined. |date=1906 |source=https://archive.org/details/americanmuseumjo06amer/page/40/mode/1up?view=theater THE AMERICAN MUSEUM JOURNAL, VOLUME VI, 1906 NEW YORK: PUBLISHED BY THE AM...

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