The Fossil Flora of the Cleveland District of Yorkshire: I.—The Flora of the Marske Quarry

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Abstract
T he fossil flora of the Jurassic rocks of the Yorkshire coast has been investigated by many workers. At the beginning of last century a considerable number of the common plants were described by Brongniart and Phillips, and during the succeeding years excellent collections were made by such enthusiastic workers as Bean, Leckenby, and the two Williamsons. The close and critical study of these plants was, however, never accomplished until Prof. Seward's critical work in the British Museum Catalogue appeared. This put the subject for the first time on a firm basis, and has very much simplified subsequent investigations. The earlier collectors confined their attention almost entirely to the accessible exposures of the Estuarine Series between Whitby and Filey, though some specimens are recorded from the neighbourhood of Runswick. In comparatively recent years, however, it has been found that the Lower Estuarine Beds in the Cleveland district were very fossiliferous, and large collections have been made by enthusiastic local geologists. As a result, several interesting forms were discovered in this district which were unknown farther south, and a systematic and critical examination of the whole flora was deemed advisable. The present work is the result of a re-examination of the specimens collected by the Rev. G. J. Lane, F.G.S., and Mr. T. W. Saunders, F.G.S., who have succeeded in obtaining a large number of fossils from the Marske and Upleatham quarries on Upleatham Hill. They kindly sent the most important specimens in their collections to me, for examination at Cambridge. I

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