An Early Cambrian Radula

@inproceedings{Butterfield2008AnEC,
  title={An Early Cambrian Radula},
  author={N. Butterfield},
  year={2008}
}
  • N. Butterfield
  • Published 2008
  • Biology
  • Abstract Microscopic teeth isolated from the early Cambrian Mahto Formation, Alberta, Canada, are identified as components of a molluscan radula, the oldest on record. Tooth-rows are polystichous and lack a medial rachidian tooth-column. Anterior-posterior differences in tooth-row morphology are interpreted as ontogenetic and correspond broadly to the diversity of isolated teeth, some of which correspond closely with those of extant aplacophoran molluscs. Associated pock-marked cuticular… CONTINUE READING
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