@misc{indiciae088690b3c649,
  title = {The Devonian colonial coral genus Billingsastraea and its earliest known species},
  author = {William Albert Oliver},
  year = {1964},
  doi = {10.3133/pp483b},
  url = {https://pubs.usgs.gov/publication/pp483B},
  note = {Source identifier: pp483B}
}