Genus Leiorhynchus Hall, 1860

Type species: Orthis quadracostata Vanuxem, 1842 .

Stratigraphic distribution: Givetian to Frasnian (upper Middle to lower Upper Devonian). Geographic distribution: North America, Germany, eastern Urals, Altai, Siberia, China.

MIN 0001435.1-4

Leiorhynchus subreniformis (Schnur, 1853) Locality: Büdesheim, Eifel region, Germany Stratigraphy: Famennian, upper Upper Devonian