Gastropoda - Murchisoniina - Loxonematidae

Alternative combination: Katospira (Girvania) excavata

Full reference: J. D. Longstaff. 1924. Descriptions of Gasteropoda, chiefly in Mrs. Robert Gray's collection, from the Ordovician and Lower Silurian of Girvan. Quarterly Journal of the Geological Society of London 80(4):408-446

Belongs to Spiroecus according to P. J. Wagner 2011

Sister taxon: Spiroecus girvanensis

Type specimen: Its type locality is Locality 4. Shalloch Mill, Whitehouse Bay, Girvan, which is in a Pusgillian carbonate limestone in the Mill Formation of the United Kingdom.