NYCTODACTYLUS.
Nyctosaurus Marsh, Amer. Journ. Sci. xii, p. 480, Dec. 1876. (nomen preoc.[1]).
Nyctodactylus Marsh, Amer. Journ. Sci. xxi, p. 343, April 1881: ibid. xxvii, p. 423, May 1884.
Nyctodactylus gracilis.
Pteranodon gracilis Marsh, Amer. Journ. Sci. xi, p. 508, June 1876.
Nyctosaurus gracilis Marsh, Amer. Journ. Sci. xii, p. 480, Dec. 1876.
Nyctodactylus gracilis Marsh, Amer. Jour. Sci. xxi, p. 343, April 1881.