Charlesworth, E. (1839)
On the fossil remains of a species of Hybodus, from Lyme Regis. Magazine of Natural History, n.s. 3(9), 242–248

Charlesworth, E. (1837)
Notice of the teeth of Carcharias megalodon occurring in the Red Crag of Suffolk. Magazine of Natural History, n.s. 1(2), 225–227