File:Echidna historic embryology 52.jpg

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Historic Embryology - Echidna

Short-beaked echidna (Tachyglossus aculeatus) embryos, from Plate XI of original reference.

Legend

  • aur - external ear
  • b - anlage of pouch
  • gh - genital hump
  • spy - hump shaped anlage of the spur
  • spt - skin fold in which the spur retreats
  • f - view of the hind limb, showing development of the spur
  • s - lateral view
  • v - frontal view (of head)
  • v1 - frontal view enlarged
  • s1 - lateral view enlarged
  • 47 to 53 - pouch young.


Links: Echidna Development | Historic embryo drawings 1 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | Historic embryo drawings 2 | 47 | 48 | 49 | 48-49 | 50 | 51 | 52 | 53


Smaller outline drawings show the original size of the embryo in original publication.

Reference

Semon, R. Zur Entwickelungsgeschichte der Monotremen. Denkschriften der Medizinisch-Naturwissenschaftlichen Gesellschaft zu Jena (1894) 5: 61–74.

(Embryology of the monotremes. Proceedings of the Medical and Natural Sciences Society in Jena)

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