_____________________________________________________________________________________ Graptolite Net edited by Piotr Mierzejewski, the Count of Calmont and Countess Maja Anna Korwin-Kossakowska 2004 |
Portal of Graptolites and Pterobranchs sponsored by M.M. PLUS M. SZTANDARY |
Graptolite Net | Graptolites & Graptoliters | Evolution of Graptolites | Cephalodiscoidea | Rhabdopleuroidea |
SCANNING ELECTRON MICROSCOPY OF SESSILE GRAPTOLITES Adam Urbanek, Grazyna Mierzejewska and Piotr Mierzejewski Acta Palaeontologica Polonica 1980, 25 (2): 197-212. |
Rollers on the periderm surface of the Ordovician Dictyonema sp. (erratic boulder, Poland). From Urbanek et al. 1980. |