@misc{indiciae5cea1b479733,
  title = {Glaciation in Taylor Valley, Antarctica, older than 2.7 million years},
  author = {R.L. Armstrong and W. Hamilton and G.H. Denton},
  year = {1968},
  doi = {10.1126/science.159.3811.187},
  url = {https://pubs.usgs.gov/publication/70011523},
  note = {Source identifier: 70011523}
}