Genus Trigonirhynchia Cooper, 1942

Type species: Uncinulina fallaciosa Bayle, 1878 .

Stratigraphic distribution: lower Wenlock to lower Eifelian (Middle Silurian to lower Middle Devonian). Geographic distribution: Europe, North America, Siberia, China, Mongolia.

MIN 0001483

Trigonirhynchia tennesseensis (Roemer, 1860) Locality: Tennessee, USA

Stratigraphy: Lower Silurian