Observation of the Pleurotomarid Entemnotrochus adansoniana in its Natural Habitat

@article{Yonge1973ObservationOT,
  title={Observation of the Pleurotomarid Entemnotrochus adansoniana in its Natural Habitat},
  author={C. Yonge},
  journal={Nature},
  year={1973},
  volume={241},
  pages={66-68}
}
THE pleurotomarids or slit-shells are the most primitive of existing gastropods and of unique malacological and conchological interest. They retain, in a particularly deep mantle cavity, what was probably the original molluscan organization of paired gills and associated organs1. Externally they are large top shells but with a narrow slit running far back from the outer lip of the shell. The Pleurotomariacea were originally known only as fossils, appearing in the late Upper Cambrian and… Expand
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