. Bulletin of the Natural Histort Museum. Geology series. . Fig. 15 A-F Ginkgoites nannyoggiae sp. nov. A, E from Wessex Formation, Worbarrow Bay. Dorset. B, D from Wessex Formation. Mupe Bay. Dorset. C, F show tfie holotype, from Fairlight Clays facies of Ashdown Beds. Galley Hill. Sussex: all lower cuticle. A, random arrangement of papillate ordinary epidermal cells, , LM, x 125; B, outer surface of cuticle showing stomatal distribution and papillate surface. SEM. x 125: C, inner surface of cuticle showing randomly arranged polygonal, isodiametric ordinary epidermal cells and
. Bulletin of the Natural Histort Museum. Geology series. . Fig. 15 A-F Ginkgoites nannyoggiae sp. nov. A, E from Wessex Formation, Worbarrow Bay. Dorset. B, D from Wessex Formation. Mupe Bay. Dorset. C, F show tfie holotype, from Fairlight Clays facies of Ashdown Beds. Galley Hill. Sussex: all lower cuticle. A, random arrangement of papillate ordinary epidermal cells, , LM, x 125; B, outer surface of cuticle showing stomatal distribution and papillate surface. SEM. x 125: C, inner surface of cuticle showing randomly arranged polygonal, isodiametric ordinary epidermal cells and scattered stomata, SEM. x 125: D, outside of single stoma showing small, flattened papillae overhanging pit, , SEM, x 750: E, 2 stomata with large protruding papillae, , LM, x 500; F, single stoma viewed from inside showing narrow dorsal plates of guard cells which bear fme radiating striae, , SEM, x 750. is smooth and featureless (Fig. 19B). Fig. 19C shows the stomata scattered and randomly orientated. The guard cells, with well cutinized 'axe-head-shaped' dorsal plates and inner anticlinal walls (Fig. 19F), are sunken beneath a ring of typically 5 subsidiary cells, and are sometimes partially exposed (Fig. 19D). The subsidiary cells sometimes bear flat papillae which overhang the round or square stomatal pit (Fig. 19E); others have a simple rim (Fig. 19D). This is a character that varies a great deal between specimens but is fairly constant for any particular specimen. Clearly further finds, particu- larly less fragmentary portions of leaf, are needed to enhance our. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Museum (London). Andover : Intercept
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