@misc{indiciaefe7fee781247,
  title = {Stratigraphy and paleontology of Mid-Cretaceous rocks in Minnesota and contiguous areas},
  author = {William Aubrey Cobban and E.A. Merewether},
  year = {1983},
  doi = {10.3133/pp1253},
  url = {https://pubs.usgs.gov/publication/pp1253},
  note = {Source identifier: pp1253}
}