File:EB1911 Peripatus - P. capensis - Series of Embryos.jpg

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Summary

Description

English: A series of embryos of P. capensis. The hind end of embryos B, C, D is uppermost in the figures, the primitive streak is the white patch behind the blastopore.

Date

published 1911

Source

“Peripatus,” Encyclopædia Britannica (11th ed.), v. 21, 1911, p. 166, fig. 11.

Author

After Sedgwick.

Permission
(Reusing this file)

This image comes from the 13^th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

English: Legend:

A,	Gastrula stage, ventral view, showing blastopore.
B,	Older gastrula stage, ventral view, showing elongated blastopore and primitive streak.
C,	Ventral view of embryo with three pairs of mesoblastic somites, dumb-bell shaped blastopore and primitive streak.
D,	Ventral view of embryo, in which the blastopore has completely closed in its middle portion. The anterior pair of somites have moved to the front end of the body.
E,	side view of later embryo. At, Antenna; d, dorsal projection; p.s., praeoral somite.
F,	Ventral view of head of embryo, intermediate between E and G. At, Antennae; c.g, cerebral groove; j, jaws; j.s. swelling at base of jaws; L, lips; M, mouth; or.p, oral papillae; o.s, opening of salivary gland.
G,	side view of older embryo.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:02, 14 May 2019		952 × 311 (78 KB)	Bob Burkhardt	{{Information \|description ={{en\|1=A series of embryos of ''P. capensis''. The hind end of embryos B, C, D is uppermost in the figures, the primitive streak is the white patch behind the blastopore.}} \|date =published 1911 \|source =“Peripatus,” ''Encyclopædia Britannica'' (11th ed.), v. 21, 1911, p. 166, fig. 11. \|author =After Sedgwick. \|permission ={{PD-Britannica}} }} {{en\|Legend:}} {\| \|-valign="top" \|A,\|\|Gastrula stage, ventral view, showing blastopore. \|-valig...

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