Nicholas C. Fraser
University of Cambridge, Department of Zoology.
Fraser N. C., 1989, A new pterosaur record from a lower Jurassic fissure deposit in South Wales. N. Jb. Geol. Paläont. Mheft. pp. 129–135.
Fraser N. C. and Unwin D. M., 1990, Pterosaur remains from the Upper Triassic of Britain. N. Jb. Geol. Paläont. Mheft pp. 272–282.