File:Origin of Vertebrates Fig 160.png

From Wikisource
Jump to navigation Jump to search

Original file(2,027 × 2,200 pixels, file size: 187 KB, MIME type: image/png)

Summary

Description
English: Fig. 160.—A, Diagram of Section through a Trilobite-like Animal; B, Diagram to illustrate Suggested Obliteration of Appendages and the Formation of an Atrial Cavity by the Ventral Extension of the Pleural Folds; C, Diagram to illustrate the Completion of the Vertebrate Type by the Meeting of the Pleural Folds in the Mid-ventral Line and the Obliteration of the Atrial Cavity.


Al., alimentary canal; N., nervous system; My., myotome; Pl., pleuron; App., appendage; Neph., nephrocœle; Met., metacœle; S.d., segmental duct; At., atrial chamber; V.Mes., ventral mesentery; Mes., mesonephros. The dotted line represents the splanchnopleuric mesoblast in all figures.
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.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current16:05, 11 November 2013Thumbnail for version as of 16:05, 11 November 20132,027 × 2,200 (187 KB)Keith EdkinsCleaned
09:46, 11 November 2013Thumbnail for version as of 09:46, 11 November 20132,027 × 2,200 (187 KB)Keith Edkins== {{int:filedesc}} == {{Information |Description={{En|Fig. 160.—A, Diagram of Section through a Trilobite-like Animal; B, Diagram to illustrate Suggested Obliteration of Appendages and the Formation of an Atrial Cavity by the Ventral Extension of th...

The following page uses this file:

Metadata