IRMNG Taxon list
Gonyaulacysta Deflandre, 1964 †Gonyaulacysta boreas R.J. Davey †Gonyaulacysta cassidata (Eisenack & Cookson, 1960) Sarjeant, 1966 †Gonyaulacysta confossa Duxbury, 1977 †Gonyaulacysta dualis (Brideaux & Fisher, 1976) Stover & Evitt, 1978 †Gonyaulacysta filapicata H. Gocht †Gonyaulacysta helicoidea (Eisenack & Cookson, 1960) Sarjeant, 1966 †Gonyaulacysta jurassica (Deflandre, 1938) Norris & Sarjeant, 1965 †Gonyaulacysta kostromiensis (Vozzhennikova, 1967) Sarjeant, 1969 †Gonyaulacysta longicornis (Downie, 1957) Sarjeant, 1969 †Gonyaulacysta perforobtusa Duxbury, 1977 †Gonyaulacysta polythyris R.J. Davey, 1979 †Gonyaulacysta teicha R.J. Davey †
