Membranilarnacia pterospermoides
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"?pterospermoides" (Wetzel, 1933b, p.52, pl.6, figs.1-2) Downie and Sarjeant, 1965, p.130. Emendation: Sarjeant, 1985b, p.152, as Membranilarnax pterospermoides. Holotype: Wetzel, 1933b, pl.6, fig.2 (not fig.1); Sarjeant, 1985b, pl.6, figs.3-4; Fensome et al., 1995, fig.1 - p.1715. Combination illegitimate: this is the "type species" of the senior name Membranilarnax. NOW Membranilarnax. Originally (and now) Membranilarnax, subsequently Membranilarnacia? (combination illegitimate). Questionable assignment: Downie and Sarjeant (1965, p.130). Age: Late Cretaceous.
Parent: Membranilarnacia