Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 83. (Budapest 1991)

Kvaček, Z. ; Hably, L.: Notes on the Egerian stratotype flora at Eger (Wind Brickyard), Hungary, Upper Oligocene

Plate I 1 = ? Polypodiaceae vel Aspidiaceae, fragmentary pinna, EWU, No. MM 56.1344.1, x 3 - 2 = Pronephrium stiriacum (UNG.) KNOBLOCH et KVACEK, leaf fan, EWU, No. MM 66.372.1, x 0.9 - 3 = Equisetum sp., fragmentary stem, EWU, No. MM 65.726.1, x 1.5 - 4 = Osmunda lignitum (GIEBEL) STUR, pinnules, EWU, MM sine num., x 3.5