<span class="searchmatch">protobranchs</span> plural of <span class="searchmatch">protobranch</span>...
<span class="searchmatch">protobranch</span> (plural <span class="searchmatch">protobranchs</span>) Any bivalve mollusc of the subclass Protobranchia 2015 November 12, “Benthic Trophic Interactions in an Antarctic Shallow...
From proto- + . protobranchio m (plural protobranchi) <span class="searchmatch">protobranch</span> (bivalve of the order Protobranchia)...