The earliest record of the genus Cola (Malvaceae sensu lato: Sterculioideae) from the Late Oligocene (28–27 Ma) of Ethiopia and leaf characteristics within the genus

  title={The earliest record of the genus Cola (Malvaceae sensu lato: Sterculioideae) from the Late Oligocene (28–27 Ma) of Ethiopia and leaf characteristics within the genus},
  author={Aaron D. Pan and Bonnie F Jacobs},
  journal={Plant Systematics and Evolution},
A fossil leaf compression from the Late Oligocene (28–27 Ma) of northwestern Ethiopia is the earliest record of the African endemic moist tropical forest genus Cola (Malvaceae sensu lato: Sterculioideae). Based on leaf and epidermal morphology, the fossil is considered to be very similar to two extant Guineo-Congolian species but differences warrant designation of a new species. This study also includes a review of the fossil record of Cola, a comprehensive summary of leaf characteristics… Expand

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