Taxon - Odkazy a literatura
Štorch P. (2015): Graptolites from the Rhuddanian–Aeronian boundary interval (Silurian), Prague Synform, Czech Republic, Bulletin of Geosciences 90(4), 841–891 [jako Petalolithus folium (Hisinger, 1837)]
Štorch, P. & Kraft, P. (2009): Graptolite assemblages and stratigraphy of the lower Silurian Mrákotín Formation, Hlinsko Zone, NE interior of the Bohemian Massif (Czech Republic), Bulletin of Geosciences 84(1), 51–74 [jako Petalolithus folium (Hisinger, 1837)]
Štorch P. (2023): Graptolite biostratigraphy and biodiversity dynamics in the Silurian System of the Prague Synform (Barrandian area, Czech Republic), Bulletin of Geosciences 98(1), 1–78 [jako Petalolithus folium (Hisinger)]