Gonyaulax bulloidea Cookson and Eisenack, 1960b, p.247, pl.37, fig.11; text-figs.4a-b. Emendation: Riding and Helby, 2001g, p.206, as Meiourogonyaulax bulloidea.

Originally Gonyaulax, subsequently (and now) Meiourogonyaulax, thirdly Lithodinia.
Possible tax. sr. synonym of Meiourogonyaulax stoueri Millioud, 1969, according to Backhouse, 1988. Lentin and Williams, 1989, retained Meiourogonyaulax stoveri as a separate species.

Holotype: Cookson and Eisenack, 1960, pl.37, fig.11
Locus typicus: Canning Basin, Australia
Stratum typicum: Thitonian

Original description: Cookson and Eisenack, 1960, p.247
Shell sphaerical, rather thick-walled, epitheca and hypotheca nearly equal, seperated by a rather broad, helicoidal girdle. Longitudinal furrow broadened towards the antapex. Plates mostly squarish or broadly trapezoid; plates 2" and 3" especially large, palte 1""" rather large, nearly rectangular. Formula 4", 6"", 6""", 1p, 1""". The girdle, longitudinal furrow, and paltes are bordered by low but well-developed ledges; both plates and ledges are ¦ granular, a feature which, when taken in conjuntion with the sphaerical shape and squarish plates, gives the shell a very characteristic appearance. The apex is marked by a small pointed projection. In all the examples observed, plate 3"", which in many species of Gonyaulax becomes detached to form the pylome, has always been in position. On the other and, in some specimens the apical plates have been missing (?Ekdysis).
Dimensions: Holotype 78 Ám long, 83 Ám broad. Range 60-88x57-83 Ám.