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Use the links to navigate the hierarchy of invertebrate classification.
Subclass Heterobranchia
Infraclass Opisthobranchia
Order Acochlidiacea
Order Anaspidea
Order Cephalaspidea
Order Gymnosomata
Order Nudibranchia
Order Pleurobranchomorpha
Order Runcinacea
Order Sacoglossa
Order Thecosomata
Order Umbraculida
Taxon Information
The Infraclass Opisthobranchia has been reported (or is assumed) to occur in fresh waters. This taxon has not been reported from North America.
(These statements were generated automatically from the WInvertebrates database.)
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