From much-maligned garden slugs and snails to tool-using octopuses and bivalves such as clams and oysters, molluscs are among the most diverse animal groups on the planet. But their origins are a ...
PRESENT-DAY authorities agree that, within the Mollusca, the chitons (or Polyplacophora) are closely related to the solenogastres (or Aplacophora). An important item influencing this view is the ...