Genus Nucleospira Hall, 1858

Type species: Spirifer ventricosus Hall, 1857 .

Stratigraphic distribution: Llandovery to Sakmarian (Silurian to Lower Permian). Geographic distribution: cosmopolitan.

MIN 0001406

Nucleospira lens (Schnur, 1851) Locality: Pelm, Eifel region, Germany Stratigraphy: Middle Devonian