C. Fikenscher
Fikenscher C., 1865, Letter on a Pterodactylus find at Eichstätt. N. Jb. Miner. Geol. Paläont. p. 46.
Fikenscher C., 1872, Letter on a Pterodactylus find with flight membrane. N. Jb. Miner. Geol. Paläont. p. 861–862.