Brit. Mus. Cat. Foss. Fishes, iii. pp. 48, 415.
Bashford Dean, Q.J.M.S. xxxviii. p. 413.
This genus also occurs in the Cretaceous of Brazil (Smith Woodward, A.M.N.H. (7) ix. 1902, p. 87.)
It is possible that a similar articulation is present in Lepidotus (Smith Woodward, Brit. Mus. Cat. Foss. Fishes, iii. p. 79).
Jordan and Evermann, op. cit. p. 108, et seq.