From Fensome et al., 2019:
Stromaphora *caudata Xu Jinli et al., 1997, p.123–124,155–156, pl.8, figs.9–11; text-fig.15. Holotype: Xu Jinli et al., 1997, pl.8, fig.10; text-fig.15. Age: Middle–Late Eocene.

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