Smaragdinella calyculata, South Pacific. In the Anaspidea there is a tendency for parapodia to enlarge, and together with the mantle, to enclose the fragile shell (with increasingly reduced and involute spire). There is also a tendency for the mantle cavity to be reduced in size and pushed to the right, and for the visceropallium (visceral mass and mantle) to be dominated by the head-foot.
Life Stages And Gender
Coloration/Patterning :: Cryptic
John B. Burch (photographer; copyright holder), Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor
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Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2020. The Animal Diversity Web (online). Accessed at https://animaldiversity.org.
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