Meiourogonyaulax spongiosa

spongiosa Smelror, 1987, p.230,232, figs.5A–G; text-fig.3. Holotype: Smelror, 1987, fig.5B. Originally (and now) Meiourogonyaulax, subsequently Lithodinia. This species is here retained in Meiourogonyaulax following the retention of the genus by Riding and Helby (2001d, p.81,83). Age: late Callovian.