@misc{indiciae4c7f0c7c2b60,
  title = {Patterns of generic extinction in the fossil record},
  author = {Raup, D. M. and Boyajian, G. E.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/20040089071},
  note = {Source identifier: 20040089071}
}