WARD, D.J. (1978)
Additions to the fish fauna of the English Palaeogene. 1. Two new species of Alopias (Thresher Shark) from the English Eocene. Tertiary Research, 2 (1): 23-28, 6 fig.
KEMP, D.J. (1982)
Fossil sharks, rays and chimaeroids of the English Tertiary period. Gasport Museum, 1-47, 10 fig., 3 tabl., 16 pl.