Parvocysta triquetra
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?triquetra Riding and Shaw in Riding et al., 1991, p.152, pl.1, figs.6–10; text-fig.4B. Holotype: Riding et al., 1991, pl.1, fig.9. Questionable assignment: Riding and Shaw in Riding et al. (1991, p.152). Age: late Toarcian–Aalenian.
Parent: Parvocysta