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File:Ambystoma inuculatum early cleavage.jpg

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Fig. 149. Early cleavage in Ambystoma inuculatum (punctatum). (After Eycleshymer, J. Morphol., 10, and eggs in the laboratory.) (A, B) First cleavage furrow, meridional plane. (C) Second cleavage furrow at right angles to first furrow, meridional plane. (D) Third cleavage furrow, latitudinal, forming four micromeres and four macromeres.

(E) Fourth cleavage furrow; mixture of meridional and vertical planes of cleavage. (F) Fifth cleavage furrows; mixture of latitudinal and vertical planes of cleavage. Observe equatorial plane cutting the large macromeres. (G-I) Later cleavage stages.
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Source https://archive.org/details/comparativeembry00nels/page/306/mode/1up?view=theater&q=BLASTULATION+ Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illustrations.
Author Nelsen, Olin E.

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current02:04, 11 March 2024Thumbnail for version as of 02:04, 11 March 20241,123 × 1,101 (1.12 MB)Rasbak (talk | contribs){{Information |description=Fig. 149. Early cleavage in Ainbystoma inuculatum (punctatum). (After Eycleshymer, J. Morphol., 10, and eggs in the laboratory.) (A, B) First cleavage furrow, meridional plane. (C) Second cleavage furrow at right angles to first furrow, meridional plane. (D) Third cleavage furrow, latitudinal, forming four micromeres and four macromeres. (E) Fourth cleavage furrow; mixture of meridional and vertical planes of cleavage. (F) Fifth cleavage furrows; mixture of latitudi...

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