@misc{indiciae0e2cc485d6d9,
  title = {Redescription of the Early Cambrian Helenia bella Walcott, an appendage of Hyolithes},
  author = {Ellis L. Yochelson},
  year = {1974},
  url = {https://pubs.usgs.gov/publication/70156523},
  note = {Source identifier: 70156523}
}