@article{Becker2009,
  author    = {Herman Frederick Becker},
  title     = {The Tertiary Mormon Creek flora from the upper Ruby River basin in southwestern Montana},
  journal   = {Palaeontographica / B},
  volume    = {107},
  number    = {Lfg. 4-6},
  pages     = {83 -- 126},
  year      = {2009},
}