↑Bogner, Josef; Johnson, Kirk R.; Kvacek, Zlatko; Upchurch, Garland R. Jr (2007). "New fossil leaves of Araceae from the Late Cretaceous and Paleogene of western North America". Zitteliana. 47: 133–147.
↑Herrera, F.A.; Jaramillo, C.A.; Dilcher, S.L.; Wing; Gómez-N, C. (2007). "Fossil Araceae from a Paleocene neotropical rainforest in Colombia". American Journal of Botany. 95: 1569–1583. Text "doi:10.3732/ajb.0800172" ignored (help)