Neogastropoda
Clea sp., a Thai freshwater snail.
Neogastropods can usually be recognized by their long incurrent siphon and accompanying siphonal structure on the base of the shell. Nearly all neogastropods are marine. Clea is a rare freshwater genus.
Contributors
John B. Burch (author), Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor.
Glossary
- bilateral symmetry
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having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
- ectothermic
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animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature