@misc{indiciaec6274f8758dc,
  title = {Karyotype of Marmosa canescens (Marsupialia: Didelphidae): a mouse opossum with 22 chromosomes},
  author = {M.D. Engstrom and A. L. Gardner},
  year = {1988},
  url = {https://pubs.usgs.gov/publication/5223653},
  note = {Source identifier: 5223653}
}