A fruit and leaves of Rhamnaceous affinities from the late Cretaceous (Maastrichtian) of Colombia.

@article{Correa2010AFA,
  title={A fruit and leaves of Rhamnaceous affinities from the late Cretaceous (Maastrichtian) of Colombia.},
  author={Edwin Correa and Carlos Jos{\'e} Jaramillo and Steven R. Manchester and Mauricio Guti{\'e}rrez},
  journal={American journal of botany},
  year={2010},
  volume={97 1},
  pages={
          71-9
        }
}
Although Rhamnaceae are distributed worldwide today, the former hypothesis for its Laurasian origins may need to be reconsidered in view of recently discovered fossils from the Guaduas Formation of central Colombia (∼68 Ma), including fossil leaves (Berhamniphyllum) and a fruit (Archaeopaliurus boyacensis). Recent phylogenetic studies calibrate the stem of Rhamnaceae at 64 Ma and divide the family into three groups, rhamnoid, ampeloziziphoid, and ziziphoid. Although the fruit, Archaeopaliurus… CONTINUE READING

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