LiteratureHarris, T.M., 1961. The Yorkshire Jurassic Flora I. Thallophyta-Pteridophyta. British Museum (Natural History), London. Harris, T.M., 1964. The Yorkshire Jurassic Flora II. Caytoniales, Cycadales and Pteridosperms. British Museum (Natural History), London. Harris, T.M., 1969. The Yorkshire Jurassic Flora III. Bennettitales. British Museum (Natural History), London. Harris, T.M., Millington W. & Miller J., 1974. The Yorkshire Jurassic Flora IV 1. Ginkgoales, 2. Czekanowskiales. British Museum (Natural History), London. Harris T.M., 1979. The Yorkshire Jurassic Flora V. Coniferales. British Museum (Natural History), London. Konijnenburg-van Cittert van, J.H.A. & H.S. Morgans, 1999. The Jurassic flora of Yorkshire. Palaeontological Association. Field guide to fossils, no. 8. The palaeontological Society, London.
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