"Eoörnis pterovelox gobiensis is a fictional bird, a humorous hoax by Lester W. Sharp, professor of botany, Cornell University, United States.
It was initially a short talk presented together with a graduate student, Cuthbert Fraser, about the most unusual bird from the Gobi Desert, called woofen-poof by the local populace. (Compare the coinage "woofen-poof" to Whiffenpoof, Hufflepuff, etc.) Eventually it grew into a 34-page monograph signed by an Augustus C. Fotheringham, Sc.D. (Cantab.), F.R.G.S., printed by "The Buighleigh Press" in 1928, full of illustrated detail of anatomy, physiology, ecology, evolution, and historical references, complete with Cro-Magnon cave paintings — all inspired by a car mascot of a pelican. For example, Pterovelox "is perhaps most frequently observed in a peculiar resting position — legs straight out behind with the feet on the rock, tree branch or other object, the body being supported by continuous vibration of wings"."