File:Origin of Vertebrates Fig 047.png

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Summary

Description
English: Fig. 47.—A, The Formation of the Retina of the Eye of Ammocœtes (after Scott); B, The Formation of the Retina of the Eye of Ammocœtes, on my theory.


R., retina; l., lens; O.n., optic nerve fibres; Al., cephalic end of invertebrate alimentary canal; V., cavity of ventricles of brain; Al.d., anterior diverticulum of alimentary canal; op.d., optic diverticulum.


(All references in this work to Ammocœtes or Petromyzon appear to refer to the species now called Lampetra planeri.)
Date
Source The Origin of Vertebrates. https://archive.org/details/originofvertebra1908gask
Author Walter Holbrook Gaskell.


Licensing

Public domain

The author died in 1914, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.


This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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current11:18, 10 November 2013Thumbnail for version as of 11:18, 10 November 20131,615 × 722 (82 KB)Keith Edkins== {{int:filedesc}} == {{Information |Description={{En|Fig. 47.—A, The Formation of the Retina of the Eye of Ammocœtes (after Scott); B, The Formation of the Retina of the Eye of Ammocœtes, on my theory. ''R.'', retina; ''l.'', lens; ''O.n.'', op...

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