Plate P1. Fern remains from Cores 183-1138A-71R and 72R. Scale bars = 100 µm. 1. "Fiddle head," enrolled tip of a young fern frond. 2. Part of a fern frond. 3. Single fern leaflet. 4. Sporangium. 5. Fern leaflet surface structure (SEM; scale bar = 10 µm). 6. Fern leaflet epidermis with stomata (SEM; scale bar = 10 µm).

Plate P1. Fern remains from Cores 183-1138A-71R and 72R. Scale bars = 100 µm. 1. "Fiddle head," enrolled tip of a young fern frond. 2. Part of a fern frond. 3. Single fern leaflet. 4. Sporangium. 5. Fern leaflet surface structure (SEM; scale bar = 10 µm). 6. Fern leaflet epidermis with stomata (SEM; scale bar = 10 µm).