@misc{indiciae70616b58017f,
  title = {Biostratigraphy of selected K/T boundary sections in southwestern North Dakota, USA: Toward a refinement of palynological identification criteria},
  author = {Antoine Bercovici and Dean Pearson and Douglas J. Nichols and Jacqueline Wood},
  year = {2009},
  doi = {10.1016/j.cretres.2008.12.007},
  url = {https://pubs.usgs.gov/publication/70221496},
  note = {Source identifier: 70221496}
}