File:Tubulanus polymorphus, transverse section through brain region (from Coe, 1901).png

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English: Carinella speciosa (=Tubulanus polymorphus; Nemertea: Palaeonemertea: Tubulanidae). Transverse, but somewhat oblique, section through head in region of brain. On the right of the section the brain (dg and vg) lies directly beneath the circular fibres (cm). External to the brain, and lying among the bases of the integumental cells, is the highly specialized cerebral sense organ (cso), connected with the dorsal ganglion (dg) by several small nerves (sn). The cerebral sense organ shows a conspicuous central canal. The rhynchodaeum (rh) has lost its fringe of gland cells, these being limited to the region anterior to it. The outer potion of the circular layer (cm) constitutes the basement membrane of the integument. In the region of the brain the circular layer splits into two sheets, one passing external to the brain and the other (ifl) internal. A large specimen. (×25). See also standard abbreviation.
Date
Source Coe, W. R. (1901). Papers from the Harriman Alaska Expedition. XX. Nemerteans. 3: 1–110. Plate IX in the Biodiversity Heritage Library
Author Wesley Roswell Coe (1869–1960)
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current20:58, 12 August 2014Thumbnail for version as of 20:58, 12 August 20141,600 × 1,150 (923 KB)Mithril (talk | contribs)Reverted to version as of 20:41, 12 August 2014
20:43, 12 August 2014Thumbnail for version as of 20:43, 12 August 20141,550 × 900 (827 KB)Mithril (talk | contribs)incorrect upload
20:41, 12 August 2014Thumbnail for version as of 20:41, 12 August 20141,600 × 1,150 (923 KB)Mithril (talk | contribs)=={{int:filedesc}}== {{Information |Description = {{en|1=''Carinella speciosa'' (=''Tubulanus polymorphus''; Nemertea: Paleonemertea: Tubulanidae). Transverse, but somewhat oblique, section through head in region of brain. On the right of the section t...

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