File:Origin of Vertebrates Fig 120.png

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Summary

Description
English: Fig. 120.—Ammocœtes cut open in Mid-Ventral Line to show Position of Velum; Velar Folds removed on one side.


tr., trabeculæ; vel., velum; B., anterior gnathic portion of velum; ps. br., pseudo-branchial groove; m2, muscles of lower lip segment; m3, muscles of thyro-hyoid segment; mt2, insertion of tubular muscles of velum near thyroid.


(All references in this work to Ammocœtes or Petromyzon appear to refer to the European Brook Lamprey, 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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current20:57, 10 November 2013Thumbnail for version as of 20:57, 10 November 20131,341 × 933 (141 KB)Keith Edkins== {{int:filedesc}} == {{Information |Description={{En||Description={{En|Fig. 120.—Ammocœtes cut open in Mid-Ventral Line to show Position of Velum; Velar Folds removed on one side. ''tr.'', trabeculæ; vel., velum; ''B.'', anterior gnathic portio...

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