FIG. 1. — Callicrypta chlamydea n. gen., n in A minute mid-Cretaceous flower from Siberia and implications for the problem of basal angiosperms

FIG. 1. — Callicrypta chlamydea n. gen., n. sp. from the Cenomanian of Vilyuy Basin, Siberia, SEM photographs; A, holotype, a pistillate flower with a calyx, biseriate corolla, and apocarpous gynoecium (see Fig. 2 for interpretation); B, carpel with a short style, abaxial aspect; C, radial sequence of sepal (S), outer petal (Po), inner petal (Pi) and carpel (C), the carpel is split in the median plane showing the locule, the position of papillate gland on the inner petal is marked as n; D, tubular structure (staminode?) clasped at base by the inner petal; E, papillate gland (nectary?) below the apical notch of an inner petal (see n); F, carpel, lateral view, style missing. Scale bars: A, 300 µm; B, 120 µm; C, 90 µm; D, 40 µm; E, 21 µm; F, 70 µm.