A. D.  Pan, Jacobs, B. F., Dransfield, J., and Baker, W. J., ?The fossil history of palms (Arecaceae) in Africa and new records from the Late Oligocene (28-27 Mya) of north-western Ethiopia?, Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society, vol. 151, pp. 69-81, 2005.

W. J.  Baker and Couvreur, T. L. P., ?Global biogeography and diversification of palms sheds light on the evolution of tropical lineages. I. Historical biogeography?, Journal of BiogeographyJournal of Biogeography, vol. 40, pp. 274-285, 2013.

W. J.  Baker and Dransfield, J., ?Towards a biogeographic explanation of the calamoid palms?, in Monocots: Systematics and Evolution , K. L.  Wilson and Morrison, D. A., Eds. Melbourne: CSIRO, 2000, pp. 545-553.

W. J.  Baker, Dransfield, J., and Hedderson, T. A., ?Phylogeny, character evolution, and a new classification of the calamoid palms?, Systematic BotanySystematic Botany, vol. 25, pp. 297-322, 2000.