At: Petref. Germ., Düsseldorf, Arnz & Comp., 1, 2 By: Goldfuss G. A.
bookAt: Petrif. Derb., Wigan, 1 By: Martyn W.
bookAt: Petrif. Derb., Wigan By: Martyn W.
journalAt: Contributions from the Museum of Paleontology, University of Michigan, 14, 10 By: Arnold C. A.
journalAt: Pan-American Geologist, 47, 2 By: Berry E. W.
journalAt: Acta Palaeobotanica, 28, 1-2 By: Suthar O. P., Bohra D. R., Sharma B. D.
journalAt: Palaeobotanist, 1972, 21, 3 By: Trivedi B. S., Verma C. L.
journalAt: Quarterly Journal of the Geological, Mining and Metallurgical Society of India, 5, 2 By: Rode K. P.
journalAt: Botanical Magazine, 96, 1042 By: Nishida M., Nishida H.
journalAt: Botanical Magazine, 104, 1075 By: Nishida H., Nishida M., Tanaka K.