New fossil leaves of Araceae from the Late Cretaceous and Paleogene of western North America133–147
Bogner, Josef, Johnson, Kirk R., Kvaček, Zlatko, and Upchurch, Garland R., Jr. 2007. "New fossil leaves of Araceae from the Late Cretaceous and Paleogene of western North America." Zitteliana, A47 133–147.