Fig. 4.
Photomicrographs of abaxial leaf surfaces of fossil taxa. (A–C) Dictyozamites johnstrupii (Bennettitales), transverse stomata. (D) Otozamites bornholmiensis (Bennettitales), transverse stomata. (E) Androvettia sp. (conifer), stomata variously oriented. Scale bars: 20 µm in A; 50 µm in B–E.

Photomicrographs of abaxial leaf surfaces of fossil taxa. (A–C) Dictyozamites johnstrupii (Bennettitales), transverse stomata. (D) Otozamites bornholmiensis (Bennettitales), transverse stomata. (E) Androvettia sp. (conifer), stomata variously oriented. Scale bars: 20 µm in A; 50 µm in B–E.

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