An Early Cambrian Radula

@inproceedings{Butterfield2008AnEC,
  title={An Early Cambrian Radula},
  author={Nicholas J.F. Butterfield},
  booktitle={Journal of Paleontology},
  year={2008}
}
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… Expand
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  • Biology, Medicine
  • Proceedings of the Royal Society B: Biological Sciences
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TLDR
A diverse assemblage of small carbonaceous fossils from the early Cambrian (Stage 4) File Haidar Formation of southeast Sweden and surrounding areas of the Baltoscandian Basin is reported, including exceptionally preserved remains of Burgess Shale-type metazoans and other organisms. Expand
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