Hydrodynamic performance of ordovician archaeostracan carapaces

HIGHLIGHTS

• What: The authors show that streamlining of the carapace was an important factor facilitating a pelagic mode of life in caryocaridids in reducing the drag coefficient and facilitating a broader range of lift coefficients at different angles of attack. The authors explore the hydrodynamic performance (drag and lift) of caryocaridid carapaces, contrasting them with archaeostracan relatives including the late Cambrian benthic Arenosicaris and Ordovician ceratiocaridids, which are generally considered pelagic or nektobenthic . The authors focused on the role of the carapace outline, however this is just one of a number of morphological features that can improve swimming . . .
  

   

  

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