Taxon - Links and literature
Paleobiology Database [7777]
Paleobiology Database [https://paleobiodb.org/] [as Quadrotheca Sysoyev, 1958]
Data retrieved on: 24 December 2015
The Interim Register of Marine and Nonmarine Genera [1208724]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Quadrotheca Sysoev, 1957]
Data retrieved on: 30 November 2019
Marek L. (1967): The Class Hyolitha in the Caradoc of Bohemia, Sbor. geol. věd, Paleontologie 9, 51-112 [as Quadrotheca Sysoyev, 1958]
Mergl M. (2004): The earliest brachiopod-bryozoan dominated community in the Ordovician of peri-Gondwana and its ancestors: A case study form the Klabava Formation (Arenigian) of the, Journal of Geosciences 49(3-4) [as Quadrotheca Syssoiev, 1958]