. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Segmentation Cavity ^Archenteron â . ,.iâ-» Dorsal Lip of Blastopore -Yolk Plug Ventral Lip of Blastopore Fig. 123. Gastrulation in the development of the frog. (From Huettner, Fundamentals of Comparative Embryology of the Vertebrates, copyright 1941, by permission of The Macmillan Company, publishers.) Zone of Junction Archenteron ,Endoderm Dorsal Lip of Blastopore Margin of Overgrowth \«.: Germ Wall Segmentation Blastopore' Cavity Fig. 124. Gastrula of
. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Segmentation Cavity ^Archenteron â . ,.iâ-» Dorsal Lip of Blastopore -Yolk Plug Ventral Lip of Blastopore Fig. 123. Gastrulation in the development of the frog. (From Huettner, Fundamentals of Comparative Embryology of the Vertebrates, copyright 1941, by permission of The Macmillan Company, publishers.) Zone of Junction Archenteron ,Endoderm Dorsal Lip of Blastopore Margin of Overgrowth \«.: Germ Wall Segmentation Blastopore' Cavity Fig. 124. Gastrula of the chick. (From Huettner, Fundamentals of Comparative Embryology of the Vertebrates, copyright 1941, by permis- sion of The Macmillan Company, publishers.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Walter, Herbert Eugene, b. 1867; Sayles, Leonard Perkins, 1902-. New York : Macmillan Co.
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