Pectinibranchia
plural noun
Pec·tini·bran·chia
| \ ˌpektənəˈbraŋkēə, pekˌtin-\
Definition of Pectinibranchia
: a large order of Gastropoda (subclass Streptoneura) comprising univalve mollusks that have a single kidney, have typically a single ctenidium which resembles a comb and is usually attached to the mantle throughout its length, and have a heart with only one auricle
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