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Evolution of two novel feeding strategies among caenogastropod molluscs, suspension feeding in calyptraeids such as Crepidula fornicata and predatory feeding with a pleurembolic proboscis among neogastropods, may have both involved elongation of the anterior esophagus. Emergence of predatory feeding with a proboscis is particularly significant because it correlates with the rapid adaptive radiation...
Post-Paleozoic life history transitions in mollusks and echinoderms have been biased toward switches from feeding, planktonic larvae (planktotrophic), to one of the non-feeding developmental modes, such as maternally provisioned planktonic larvae, fully encapsulated larvae, or direct development. Nevertheless, rare resurrections of feeding larvae from fully encapsulated larvae have occurred within...
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