Sipho-cameral structures in some Silurian cephalopods from the Barrandian area (Bohemia) Ivan Kolebaba 1999 | volume 55 | issue 1-2 | pages 1–15 PDF
New data and revision of three gymnosperms from the Cenomanian of Bohemia – Sagenopteris variabilis (VELENOVSKÝ) VELENOVSKÝ, Mesenea bohemica (CORDA) comb. n. and Eretmophyllum obtusum (VELENOVSKÝ) comb. n. Jiří Kvaček 1999 | volume 55 | issue 1-2 | pages 15–24 PDF
Neue oder wenig bekannte Pflanzenarten aus den Perucer Schichten (Cenoman) der Bohmisschen Masse Erwin Knobloch 1999 | volume 55 | issue 1-2 | pages 25–60 PDF
