Eostangeria Barthel (Extinct Cycadales) from the Paleogene of Western North America and Europe

@article{Kvaek1999EostangeriaB,
  title={Eostangeria Barthel (Extinct Cycadales) from the Paleogene of Western North America and Europe},
  author={Zlatko Kva{\vc}ek and Steven R. Manchester},
  journal={International Journal of Plant Sciences},
  year={1999},
  volume={160},
  pages={621 - 629}
}
  • Z. Kvaček, S. Manchester
  • Published 1 May 1999
  • Environmental Science, Geography
  • International Journal of Plant Sciences
Fernlike leaflets from the Paleocene of Wyoming and Eocene of Oregon are recognized as cycad foliage based on diagnostic epidermal structure. The fossils conform to Eostangeria Barthel, an extinct genus based on Eocene foliage from Germany, and are described as a new species, Eostangeria pseudopteris Kvaček et Manchester. Eostangeria resembles the extant South African cycad Stangeria T. Moore (Stangeriaceae) in gross morphology (featherlike leaflets with dentate margin), but the fossil more… 
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