Cordaites cf. lingulatus Grand’Eury, 1877

(Fig. 9F)

This leaf, found associated with the stem of Figure 9A, has a thin lamina (0.4 mm), a smooth surface and very closely spaced veins (less than 0.4 mm interval, i.e. about 25 per cm). Rectangular sclerotic strands extend above and below veins; the mesophyll is differentiated into palisade and more or less spongy tissues. Despite similarities with the species C. lingulatus Grand’Eury as illustrated by Renault (1879) this leaf may represent variability of other species like Cordaites principalis Germar, as illustrated by Harms & Leisman (1961).