Alternative combinations: Ingelarella isbelli, Martiniopsis isbelli, Tomiopsis isbelli
Full reference: K.S.W. Campbell. 1961. New species of the Permian spiriferoides Ingelarella and Notospirifer from Queensland and their stratigraphic implications. Palaeontographica Abteilung A 117(5-6):159-192
Type specimen: UQ F25040. Its type locality is Parish North Britton, Homevale, which is in an Artinskian marine siliciclastic in the Tiverton Formation of Australia.
Average measurements (in mm): shell 57.9 x 83.8, valve 68.3 x 85.5