A new species of Thuja (Cupressaceae) from the Late Cretaceous of Alaska: implications of being evergreen in a polar environment.

@article{Lepage2003ANS,
  title={A new species of Thuja (Cupressaceae) from the Late Cretaceous of Alaska: implications of being evergreen in a polar environment.},
  author={Ben A Lepage},
  journal={American journal of botany},
  year={2003},
  volume={90 2},
  pages={
          167-74
        }
}
A branch bearing a number of seed cones of Thuja L. (Cupressaceae) has been recovered from a Late Cretaceous (Turonian) deposit from the North Slope of Alaska. This reproductive material is the oldest known for the genus and is indistinguishable from the seed cones of most of the extant species of Thuja, indicating that the seed cones of this Alaskan fossil Thuja had attained a modern morphological appearance early in the evolutionary history of the genus. From a physiological standpoint, the… CONTINUE READING

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