Liriodendrites is an extinct genus of plants, known from fossil leaves. These have a forked apex (bifurcate), like those of extant species of Liriodendron. They have been interpreted as transitional between the leaves of the extinct genus Liriophyllum and Liriodendron. The genus has been placed in the family Magnoliaceae. Five species are known: L. aeternus, L. bradacii,Johnson, Kirk R. (1996). Description of seven common fossil leaf species from the Hell Creek Formation (Upper Cretaceous: Upper Maastrichtian), North Dakota, South Dakota, and Montana. Proceedings of the Denver Museum of Natural History. ser. 3 (12): 47 pp. L. laramiense,Kirk R. Johnson; See: Johnson, Kirk R. (1989). A high-resolution megafloral biostratigraphy spanning the Cretaceous-Tertiary boundary in the northern Great Plains. Ph.D Dissertation. Yale University, New Haven. [Volume=I-II.].; Note: "Primary type" of HC166 L. occidentalis and L. sachalinensis. It has been discovered in the United States (Hell Creek Formation), Egypt (Bahariya Formation) and Russia (Sakhalin and Siberia).
References