Burgessomedusa specimens preserve a large bell, more than ninety marginal tentacles and internal radial structures consistent with a free-swimming medusozoan by the middle Cambrian.
claim:event:burgessomedusa-swimming-medusaBurgessomedusa swimming-medusa evidence
A middle-Cambrian compression sample places macroscopic bell-and-tentacle medusae in the fossil record without reconstructing their ancestor.
Represented range506–504 Ma
RegionsRaymond Quarry, Burgess Shale, British Columbia, Canada
CladesBurgessomedusa phasmiformis · Medusozoa
Claim ledger
References
- A macroscopic free-swimming medusa from the middle Cambrian Burgess ShaleMoon, J.; Caron, J.-B.; Moysiuk, J. · 2023 · DOI 10.1098/rspb.2022.2490