Sigmomorphina beaglensis
Loeblich and Tappan, 1994
type specimen   holotype
Quaternary
Banda, Timor and Arafura Sea

Sigmomorphina flintii
(Cushman, 1923)
identified by M. Hesemann   
Quaternary
off Spitsbergen

Sigmomorphina guttula
Fuchs, 1970
type specimen   holotype
Jurassic
Vienna Basin

Sigmomorphina jacksonensis
(Cushman, 1926)
identified by M. Hesemann   
Paleogene
American South

Sigmomorphina regularis
(Münster, 1838)
identified by M. Hesemann   
Paleogene
North European Plain

Sigmomorphina torta
(Galloway & Wissler, 1927)
type specimen   holotype
Quaternary
Western Canada and USA

Sigmomorphina undulosa
(Terquem, 1878)
identified by M. Hesemann   
Quaternary
Greater North Sea

Sigmomorphina undulosa
(Terquem, 1878)
identified by M. Hesemann   
Quaternary
Greater North Sea

Sigmomorphina megapolitanasp.
(Clodius, 1922)
identified by scientist   
Paleogene
North European Plain

Sigmomorphina megapolitanasp.
(Clodius, 1922)
identified by scientist   
Paleogene
North European Plain