multiplacophoran

plural multiplacophorans

1. Any of the order †Multiplacophora of stem-chitons that lived during the Lower Cambrian to the Permian, which have a number of plates arranged in 7 rows along the body.

   Vendrasco et al. (2004) regarded the skeleton of E. dufoei as intermediate in form between the skeletons of multiplacophorans and typical chitons.

   2008, John Pojeta, Jimmie Dufoe, New information about Echinochiton dufoei, the Ordovician spiny chiton*, pages 32-33

   1 more example

   The recent discovery of an exceptionally well-preserved specimen of another multiplacophoran, Polysacos vickersianum, from the Carboniferous of Indiana (United States), enabled a more accurate reconstruction of the body plan of this group (Vendrasco et al. 2004).

   2008, David R. Lindberg, Winston Ponder, editors, Phylogeny and Evolution of the Mollusca, University of California Press, page 77, column 2

1. not comparableRelating to the order †Multiplacophora.

   The greater complexity of the multiplacophoran skeleton compared with that of typical chitons is likely a derived feature of the group. The presence of small scutes as well as large central valves

   2007, Troy E. Wood, Seventeen Plates and Fifty-five Spines: A New Palacozoic Chiton from Indiana, Indiana University, page 6

   1 more example

   Paleozoic tabulate and rugose corals were completely eliminated in the extinction, as were fenestrate bryozoans, goniatite cephalopods, blastoid echinoderms, trilobites, rostroconch mollusks, multiplacophoran stem-group chitons, and hyoliths.

   2020, David Alderton, Scott Elias, editors, Encyclopedia of Geology, Elsevier Science, page 649