File:Lumbricus foetidus Lateral view of an embryo in which the germ bands are clearly visible.jpg

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Description Fig. 9. Lateral view of an embryo of Lumbricus foetidus (Eisenia fetida), in which the germ bands are clearly visible. B. Ventral view of the same embryo. C. Lateral view of an older embryo. D. Transverse section through the ventral half of an embryo, showing the cleavage of the mesoblast. E. Early stage in the development of a nephridium of Rhynchelmis, showing the pronephridiostome with a single flagellum. F. A later stage in the development of a nephridium. G. Nephridium in the eleventh somite of a young worm. H. View of an older embryo of Lumbricus. ec, ectoderm; en, endoderm; ent, enteron; ext, external pore of nephridium; go, gonad; mes, mesoderm; mm, mesomeres; nep, nephroblasts; neur, neuroblasts; nph, nephridia; pnp, pronephrostome; s.s, septa; st, stomodaeum. (A to D after E. B. Wilson; E to G after Vejdovsky ; H after Kowalevsky.)
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Source https://www.flickr.com/photos/internetarchivebookimages/20763093425 An introduction to the study of the comparative anatomy of animals. London, G. Bell & sons.
Author Bourne, Gilbert Charles

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current21:45, 23 March 2024Thumbnail for version as of 21:45, 23 March 2024911 × 1,051 (623 KB)Rasbak (talk | contribs){{information |description=Fig. 9. Lateral view of an embryo of Lumbricus foetidus, in which the germ bands are clearly visible. B. Ventral view of the same embryo. C. Lateral view of an older embryo. D. Transverse section through the ventral half of an embryo, showing the cleavage of the mesoblast. E. Early stage in the development of a nephridium of Rhynchelmis, showing the pronephridiostome with a single flagellum. F. A later stage in the development of a nephridium. G. Nephridium in the e...

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