@misc{indiciaedfe2ee77588c,
  title = {The Lower Cretaceous Gryphaas of the Texas region},
  author = {Robert Thomas Hill and Thomas Wayland Vaughan},
  year = {1898},
  doi = {10.3133/b151},
  url = {https://pubs.usgs.gov/publication/b151},
  note = {Source identifier: b151}
}