File:Origin of Vertebrates Fig 064.jpg

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English: Fig. 64.—Dorsal half of Head-region of Ammocœtes.


Tr., trabeculæ; Pit., pituitary space; Inf., infundibulum; Ser., median serrated flange of velar folds.


(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/ost-biology-the_origin_of_vertebrates
Author Walter Holbrook Gaskell.


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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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current16:45, 9 November 2013Thumbnail for version as of 16:45, 9 November 20131,773 × 3,179 (819 KB)Keith Edkins (talk | contribs)== {{int:filedesc}} == {{Information |Description={{En|Fig. 64.—Dorsal half of Head-region of Ammocœtes. ''Tr.'', trabeculæ; ''Pit.'', pituitary space; ''Inf.'', infundibulum; ''Ser.'', median serrated flange of velar folds. }} |date=1908 |Sourc...

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