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New morphological data on Solariella obscura (Trochoidea: Solariellidae) from New Jersey, USA
Dornellas, A.P.; Simone, L.R.L. (2015). New morphological data on Solariella obscura (Trochoidea: Solariellidae) from New Jersey, USA. Zoologia 32(2): 162-170.
In: Zoologia. Sociedade Brasileira de Zoologia: Curitiba, PR. ISSN 1984-4670; e-ISSN 1984-4689
Peer reviewed article  

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Author keywords
    Anatomy; comparative data; North Atlantic; redescription

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  • Dornellas, A.P.
  • Simone, L.R.L.

    Anatomical data on Solariella obscura (Couthouy, 1838) are presented and analyzed. The main features of this species, when compared with other known trochoids, are: ctenidium with thick lamellae; enlarged ureter (that may indicate sexual dimorphism) instead of a modified urogenital papilla; odontophore very different from other trochoids such as Calliostoma, Agathistoma, Monodonta, and Gaza, with short m6, large mj and m4 pairs and absent m8 pair and posterior cartilages; esophageal valve surrounding the odontophore ventrally; anterior and mid-esophagus composed of several thin folds and a very wide cerebral ganglion. Solariella obscura differs from Solariella varicosa (Mighels & Adams, 1842) by having lower spire, spiral cords weaker on the base and axial rib oblique. There are no differences between S. obscura and S. varicosa in the external morphology and radula. These internal anatomical data are described for the first time for a solariellid and might improve our understanding of the relationships within this taxon.

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