@misc{indiciae6207d0e99347,
  title = {Functional groups in a single pteridosperm species: Variability and circumscription (Pennsylvanian, Nova Scotia, Canada)},
  author = {E.L. Zodrow and Maria Mastalerz},
  year = {2007},
  doi = {10.1016/j.coal.2006.06.010},
  url = {https://pubs.usgs.gov/publication/70029860},
  note = {Source identifier: 70029860}
}