Gastropods from the Cretaceous-Palaeogene boundary in Denmark Author Hansen, Thomas text Zootaxa 2019 2019-08-12 4654 1 1 196 journal article 26049 10.11646/zootaxa.4654.1.1 9ce1d103-9234-4fbe-9544-f1c294bb8783 1175-5326 3365803 CFD82CC0-3110-472E-972B-7ADC0C523A04 Genus Phorcus Risso, 1826 Type species. Phorcus margaritaceus Risso, 1826 accepted as Phorcus richardi ( Payraudeau, 1826 ) ( type by subsequent designation). Recent, the Mediterranean.