Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 MY RI APOD A 385 Segmentation of the Germ Band and Appearance of Appendages.â When the germ disk has somewhat lengthened until it is about twice as long as the broadened anterior half and before the cephalic end is sharply differentiated from the blastoderm in front, the first indication of meso- dermic segmentation becomes apparent by the formation of three seg- ments some distance fro
Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 MY RI APOD A 385 Segmentation of the Germ Band and Appearance of Appendages.â When the germ disk has somewhat lengthened until it is about twice as long as the broadened anterior half and before the cephalic end is sharply differentiated from the blastoderm in front, the first indication of meso- dermic segmentation becomes apparent by the formation of three seg- ments some distance from the posterior end of the disk. At this time the mouth may be seen as a slight depression at the anterior end. In this region the mesoderm is lacking on the median line. With the increasing length of the embryonic rudiment, which we may now call the 'germ v-pren c >:â vm V,â p21 /⢠' >i.^ y- '^ ) U-' ^*â â ' 2' i '⢠- 'Icf- ;^-^''4., A > ^^ â â f^: . \.t.'.- /'^>> â '', â â '->Q'y â ;-
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