@misc{indiciaefbeb589d6923,
  title = {North American species of Tempskya and their stratigraphic significance, with a section on stratigraphy and age of the Tempskya-bearing rocks of southern Hidalgo County, New Mexico},
  author = {Sidney R. Ash and Charles Brian Read and R.A. Zeller},
  year = {1976},
  doi = {10.3133/pp874},
  url = {https://pubs.usgs.gov/publication/pp874},
  note = {Source identifier: pp874}
}