From Fensome et al., 2019:
Membranilarnax liradiscoides ssp. gulpensis (de Wit, 1943, p.384–385; text-figs.12a–b) Lentin and Williams, 1993, p.420. Holotype: not designated. Originally Membranilarnax liradiscoides forma gulpensis, subsequently (and now) Membranilarnax liradiscoides subsp. gulpensis. Age: late Senonian.

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