Taxon - Odkazy a literatura
Paleobiology Database [103299]
Paleobiology Database [https://paleobiodb.org/] [jako Sievertsia tartas (Prokop, 1980)]
Datum citace: 25. leden 2018
Prokop R. J., Petr V. (2002): Survey of echinoderms and a new ophiocistioid Branzoviella talpa gen. et sp. n. (Echinodermata, Ophiocistioidea) in the Lower Devonian, Lochkov Formation of the Barrandian area, Czech Republic, Bulletin of the Czech Geological Survey, Vol. 77, No. 3, 237–240 [jako Sievertsia tartas (Prokop, 1980)]