At: Fossil Imprint, 74, 1-2 By: Manchester S. R., Pigg K. B., DeVore M. L.
bookAt: Iskop. Tsvetk. Rast. SSSR, Leningrad, Izdatel'stvo Nauka, Leningradskoe otdelenie, 1974, 1 By: Iljinskaja I. A.
journalAt: International Journal of Plant Sciences, 162, 5 By: Pigg K. B., Wehr W. C., Ickert-Bond S. M.
journalAt: Bulletin of the Torrey Botanical Club, 81, 2 By: Hergert H. L., Phinney H. K.
journalAt: Journal of the Hattori Botanical Laboratory, 51 By: Grolle R.
journalAt: Revue d'Auvergne, 29, Mars-April By: Marty P.
journalAt: Revue de Micropaléontologie, 21, 1 By: Antonescu E.
bookAt: Traité Paléobot., Paris, Masson, 2 By: Chaloner W. G.
journalAt: Nuovo giornale botanico Italiano, 1933, 40, 4 By: Chiarugi A.
bookAt: Anais II Congr. Lat.-Amer. Paleontol., Porto Alegre, Brazil, Editora Pallotti, 2 By: Torres T., Valenzuela E., Gonzalez I.