Petaloptyon is a genus known from the Middle Cambrian Burgess Shale. A single specimens of Petaloptyon are known from the Greater Phyllopod bed, where they comprise under 0.01% of the community.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0