File:Phascolosoma varians (10.7717-peerj.10238) Figure 2.png

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English: Figure 2: Anatomical characters of Phascolosoma (Phascolosoma) varians Keferstein, 1865.
Micrographs of hook, muscle and papillar anatomy are shown for specimen UF 332, from Saint Martin, West Indies, unless stated. (A) Distal hooks, (B) hooks of median region of introvert and (C) proximal hooks. (D) Internal anatomy of a dissected specimen, with anterior to the top. (E) Posterior attachment site of a ventral retractor muscles (VRM) associated with longitudinal muscle bands 1–9; specimen ECOSUR-S94 from the Mexican Caribbean. (F) SEM image of hook from anterior region of the introvert; specimen UF359 from St. Martin, West Indies. (G) SEM image of hooks from median region of the introvert. (H) SEM image showing stages of hook growth; from left right: first seven rings of introvert hooks, arrows show individual papillae between rows of hooks. (I) SEM image of papillae from proximal introvert (J) SEM image of papilla from median region of the introvert; specimen UF 26.5 from Florida. (K) SEM image of papilla from distal introvert. Abbreviations: DRM, dorsal retractor muscles; IN, intestine; LMB, longitudinal muscle bands; N, nephridia; SM, spindle muscle; SEM, scanning electron microscope; VRM, ventral retractor muscles. Scale bars = (A–C), 30 μm; (F, G, I and J), 20 μm; (H), 50 μm; (K), 5 μm.
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Source https://doi.org/10.7717/peerj.10238
Author [Photographer: Luis F. Carrera-Parra] Silva-Morales I. 2020. Reinstatement of Phascolosoma (Phascolosoma) varians Keferstein, 1865 (Sipuncula: Phascolosomatidae) based on morphological and molecular data. PeerJ 8:e10238 https://doi.org/10.7717/peerj.10238
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current12:27, 26 November 2020Thumbnail for version as of 12:27, 26 November 20203,000 × 4,000 (14.73 MB)Christian Ferrer (talk | contribs){{Information | description = {{en|1= Figure 2: Anatomical characters of ''Phascolosoma (Phascolosoma) varians'' Keferstein, 1865. :Micrographs of hook, muscle and papillar anatomy are shown for specimen UF 332, from Saint Martin, West Indies, unless stated. (A) Distal hooks, (B) hooks of median region of introvert and (C) proximal hooks. (D) Internal anatomy of a dissected specimen, with anterior to the top. (E) Posterior attachment site of a ventral retractor muscles (VRM) associated with...

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