File:PSM V84 D534 Facts and factors of development fig10.jpg
Jump to navigation
Jump to search
Size of this preview: 465 × 599 pixels. Other resolutions: 186 × 240 pixels | 595 × 767 pixels.
Original file (595 × 767 pixels, file size: 89 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description | Fig. 10. Successive stages in the cleavage and gastrulation of Amphioxus. A, one cell; B, two cells; C and D, four cells; E, eight cells; F, sixteen cells; G, blastula stage of about ninety-six cells; H, section through the same showing the cleavage cavity; I, blastula seen from the left side showing three zones of cells, viz., and upper clear zone of ectoderm, a middle (faintly shaded) zone of mesoderm and a lower (deeply shaded) zone of entoderm cells; J, section through the same showing these three types of cells; K and L, successive stages in the gastrulation; cells indicated as in the preceding figure. In all figures except D the polar body is shown at the upper pole. Figs A-H after Hatschek; Figs. I-L after Korschekt and Heider and Cerfontain. a, anterior; p, posterior; v, ventral; d, dorsal; bc, blastorcoel; gc, gastrocoel. | |||
| Date | ||||
| Source | Edwin Grant Conklin: Facts and factors of development. The Popular science monthly, Volume 84, p530. New York, Popular Science Pub. Co., June 1914. Online: archive.org. | |||
| Author | Edwing Grant Conklin | |||
| Other versions |
|
Licensing
|
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.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 07:57, 22 March 2018 | | 595 × 767 (89 KB) | Ineuw | Cleaned image, enhanced contrast |
| 02:51, 19 March 2011 |  | 1,720 × 1,796 (353 KB) | Martin H. |
File usage
The following 2 pages use this file:
Global file usage
The following other wikis use this file:
- Usage on et.wikipedia.org
- Usage on nl.wikipedia.org
