Taxon - Links and literature
Kraft J. (1975): Dendroid Graptolites of the Ordovician of Bohemia, Acta Mus. Nat. Prague, 31, 3 - 5 [as Dictyonema dubium Počta, 1894]
Kraft P., Kraft J. (2003): Middle Ordovician graptolite fauna from Praha – Červený vrch (Prague Basin, Czech Republic), Bulletin of Geosciences, Vol. 78, No. 2, 129–139 [as Dictyonema dubium Počta, 1894]
Havlíček V., Vaněk J. (1966): The Biostratigraphy of the Ordovician of Bohemia, Sborník geologických věd, Paleontologie, 8 [as Dictyonema dubium Poč.]