Genus Glyptorthis Foerste, 1914

Type species: Orthis insculpta Hall, 1847 .

Stratigraphic distribution: Llanvirn to Wenlock (Lower Ordovician to middle Silurian). Geographic distribution: Northern Hemisphere.

MIN 0001569

Glyptorthis insculpta (Hall, 1847) Locality: Cincinnati, Ohio, USA Stratigraphy: Ashgillian, Ordovician