@misc{indiciae87b749b77d63,
  title = {Sources of variation in extinction rates, turnover, and diversity of marine invertebrate families during the Paleozoic},
  author = {J.D. Nichols and R.W. Morris and C. Brownie and K. H. Pollock},
  year = {2016},
  doi = {10.1017/s0094837300003146},
  url = {https://pubs.usgs.gov/publication/5221499},
  note = {Source identifier: 5221499}
}