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- Title
Detarieae sensu lato (Fabaceae) from the Late Oligocene (27.23 Ma) Guang River flora of north-western Ethiopia.
- Authors
PAN, AARON D.; JACOBS, BONNIE F.; HERENDEEN, PATRICK S.
- Abstract
New species of caesalpinioid legumes, Cynometra sensu lato and Afzelia, are described from the Late Oligocene (27.23 Ma) Guang River flora in north-western Ethiopia. Both taxa show leaf characteristics that are shared with extant species in the Guineo-Congolian, Sudanian and/or Zambezian regions of Africa today. The presence of these two species in Ethiopia during the Palaeogene provides further evidence of the importance of the legume tribe Detarieae in northern and north-eastern Africa throughout much of the Cenozoic, even although the clade is poorly represented in these regions today. The fossil record documents a significant palaeogeographical and evolutionary history of Detarieae in Africa, especially compared with that of Europe and Anatolia. Based on this evidence, it is unlikely that significant diversification of extant African Detarieae took place on the Eurasian landmass. © 2010 The Linnean Society of London, Botanical Journal of the Linnean Society, 2010, 163, 44–54.
- Subjects
ETHIOPIA; AFRICA; LEGUMES; STREAM plants; OLIGOCENE paleopedology
- Publication
Botanical Journal of the Linnean Society, 2010, Vol 163, Issue 1, p44
- ISSN
0024-4074
- Publication type
Article
- DOI
10.1111/j.1095-8339.2010.01044.x