Genus Horridonia Chao, 1927

Type species: Productus horridus Sowerby, 1822 .

Stratigraphic distribution: Upper Permian.

Geographic distribution: Europe, Arctic regions,? Pakistan.

MIN 0001699.1-2

Horridonia horrida (Sowerby, 1822) Locality: Pressneck, Thuringia, Germany Stratigraphy: Upper Permian

MIN 0001701

Horridonia horrida (Sowerby, 1822) Locality: Pressneck, Thuringia, Germany Stratigraphy: Upper Permian