Family Gonyaulacaceae part
|Citation: Leptodinioideae Fensome et al. 1993b.|
Diagnosis:Gonyaulacaceans in which there is an L-type ventral organization, neutral torsion to sinistral torsion and four climactal plates, not counting small dorsal anterior intercalary plates (so-called "incidental plates"), which may or may not be present.
Ambonosphaera Fensome 1979; Jurassic (Callovian).
Durotrigia Bailey 1987; Jurassic (Bajocian).
?Energlynia Sarjeant 1976b; Jurassic (Bathonian).
Lanterna Dodekova 1969; Jurassic (Tithonian).