“…These deposits are particularly important because they represent a relatively rare example of an extensive development of predominantly non-marine Middle Jurassic sediments and they contain abundant, often exquisitely preserved, fossil plant material. However, there are only a small number of reports of megaspores from the Middle Jurassic of Yorkshire and nearby East Midlands (Black, 1929;Murray, 1939;Kendall, 1942;Gilbert and Harris, 1953;Harris, 1961) and none for at least half a century. In this paper we report on a newly discovered megaspore which has novel wall structure and ornament, and describe it as Reticuspinosporites whytei gen. et sp.…”