DNA sequence analysis dictates new interpretation of phylogenic trees. Taxa that were once
thought to represent successive grades of complexity at the base of the metazoan tree are …

The interrelationships and evolutionary history of molluscs have seen great advances in the
last decade. Recent phylogenetic studies have allowed alternative morphology‐based …

" Ponder and Lindberg provides a breathtaking overview of the evolutionary history of the
Mollusca, effectively melding information from anatomy, ecology, genomics, and …

Bivalve classification has suffered in the past from the crossed‐purpose discussions among
paleontologists and neontologists, and many have based their proposals on single …

Ecologists have proposed that when interspecific competition is reduced, competition within
a species becomes a potent evolutionary force leading to rapid diversification. This view …

The Annelida, which includes the polychaetes and the clitellates, has long held the
taxonomic rank of phylum. The unsegmented, mud-dwelling echiuran spoon worms and the …

Nine families of bivalve molluscs have undergone successful radiations in freshwater
habitats, including three heterodont taxa: the Sphaeriidae, Corbiculidae, and Dreissenidae …

Although phylogenetic studies are increasingly utilizing multi-locus datasets, a review of
GenBank data for the Gastropoda indicates a strong bias towards a few short gene …

We present the most extensive phylogenetic analysis to date, to our knowledge, of higher–
level nemertean relationships, based on sequence data from four different genes (the …

The addition of large subunit ribosomal DNA (lsrDNA) to small subunit ribosomal DNA
(ssrDNA) has been shown to add resolution to phylogenies at various taxonomic levels for a …