The original molluscan radula and progenesis in Aplacophora revisited

  title={The original molluscan radula and progenesis in Aplacophora revisited},
  author={A. Scheltema},
  journal={Journal of Natural History},
  pages={2855 - 2869}
Radulae of two Middle Cambrian Burgess Shale stem molluscs Odontogriphus and Wiwaxia have recently been imaged by new techniques. Images show both species had a central, or rhachidian, tooth and mirror-image, separately articulating lateral teeth as found in the radulae of Polyplacophora and Conchifera. The hypothesis from earlier radula images of these two fossil genera is that their radulae were like those of Aplacophora (Solenogastres [or Neomeniomorpha] + Caudofoveata [or Chaetodermomorpha… Expand
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