Taxon - Odkazy a literatura
Valent M. (2006): Stratigraphic distribution of the class Hyolitha (Mollusca) in the Barrandian Area (Czech Republic), Acta Universitatis Carolinae - Geologica 47(1). [jako Ceratotheca adunca (Barrande, 1867)]
Valent M. (2006): Stratigraphic distribution of the class Hyolitha (Mollusca) in the Barrandian Area (Czech Republic), Acta Universitatis Carolinae - Geologica 47(1). [jako Ceratotheca adunca (Barrande, 1867)]