The graptolite fauna of the Didymograptus clavulus Zone (Šárka Formation) in the Ordovician of the Prague Basin
Geoscience Research Reports 34, 2001 (GRR for 2000),
pages 32–35
Abstract
Graptolite assemblage of the Didymograptus clavulus Zone (Llanvirnian) is revised. It consists of 8 species. Their approximative stratigraphic ranges are recorded and some palaeoecological aspects are discussed.