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File:Sipunculoidea - Sipunculus nudus (2).jpg

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Description
English: Right half of the anterior end of Sipunculus nudus, L., seen from the inner side and magnified. See legend below.
Date published 1911
Source “Sipunculoidea,” Encyclopædia Britannica (11th ed.), v. 25, 1911, p. 152, Fig. 2.
Author Arthur Everett Shipley
Permission
(Reusing this file)
Public domain This image comes from the 13th 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, Funnel-shaped grooved tentacular crown leading to the mouth.
b, Oesophagus.
c, Strands breaking up the cavity of the tentacular crown into vascular spaces.
c′,  “Heart.”
d, Brain.
e, Ventral, and e′, dorsal retractor muscles.
f, Ventral nerve-cord.
g, Vascular spaces in tentacular crown.

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current20:43, 7 February 2020Thumbnail for version as of 20:43, 7 February 2020561 × 918 (172 KB)Library Guy (talk | contribs){{Information |description ={{en|1=Right half of the anterior end of ''Sipunculus nudus'', L., seen from the inner side and magnified. See legend below.}} |date =published 1911 |source =“Sipunculoidea,” ''Encyclopædia Britannica'' (11th ed.), v. 25, 1911, p. 152, Fig. 2. |author =Arthur Everett Shipley |permission ={{PD-Britannica}} }} {{en|Legend:}} {|cellpadding="0" cellspacing="0" a, Funnel-shaped grooved tentacular crown leading to the mouth. |- |''b'',||Oesop...

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