| Creseis virgula Rang, 1828 |
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| Worldwide warm seas. Suspension feeder on phytoplankton and protozoa. Shell strongly curved in the posterior part. Due to the high variability of the shell shape while aging, this taxon has many synonyms: coniformis, conoidea, falcata, flexa, unguis… Young specimens, curved, collected at 40m deep, off Le Scole, south of the harbour, Isola del Giglio, Toscana, W. Italy. 1,5-2,5mm. |
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| The species in P. C. Rang: “Notice sur quelques mollusques nouveaux appartenant au genre Cleodore, et etablissement et monographie des sous-genre Creseis”, Annales des Sciences Naturelles vol. XIII, Paris 1828, plate XVII. The animal waves its two winged parapodia in order to move. |
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| Adults in the Gulf Stream, off Florida. USNM 1449574, 1449575, 1449576, 1449577 - Specimen Image 4. – Original picture provided by K. Osborn for the Smithsonian Institution, NMNH, Invertebrate Zoology – (CCØ). |
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