^ abPigg, Kathleen B.; Manchester, Steven R.; DeVore, Melanie L. (July 2008). "Fruits of Icacinaceae (Tribe Iodeae) from the Late Paleocene of western North America". American Journal of Botany. 95 (7): 824–832. doi:10.3732/ajb.2007340. PMID21632408.
^ abDel Rio, Cédric; Thomas, Romain; De Franceschi, Dario (December 2017). "Fruits of Icacinaceae Miers from the Palaeocene of the Paris Basin (Oise, France)". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 108 (4): 459–469. Bibcode:2017EESTR.108..459D. doi:10.1017/S1755691018000221. S2CID135177730.