Taxon - Links and literature
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 [as Parapetalolithus ovatus (Barrande, 1850)]
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 [as Parapetalolithus ovatus (Barrande)]