References

1) Alford D.V. Bumblebees. London: Davis Poynter Limited, 1979. 2) Bakker, Robert T. The Dinosaur Heresies. New York: William Morrow and Company, Inc., 1986. 3) Bennett, Christopher S. "The phylogenetic position of the Pterosauria within the Archosauromorpha." Zoological Journal of the Linnean Society 118 (1996): 261-308. 4) Bennett, Christopher S. "Year classes of Pterosaurs from the Solnhofen limestone of Germany: Taxonomic and systematic implications." Journal of Vertebrate Paleontology 16 (3) (1996): 432-444. 5) Campbell, Neil A. Biology. Don Mills: The Benjamin/Cummings Publishing Company Inc., 1990. 6) Currie, Philip J. The Flying Dinosaurs. Red Deer: Red Deer College Press, 1991. 7) Keller, Alexander W. A. and Wann Langston, Jr. "Cranial remains of Quetzalcoatlus from Late Cretaceous sediments of Big Bend National Park, Texas." Journal of Vertebrate Paleontology 16(2) (1996): 222-231. 8) Langston, Wann Jr. "Pterosaurs." Scientific American Feburary 1981: 122-136. 9) McGowan, Christopher. Dinosaurs, Spitfires and Sea Dragons. Cambridge: Harvard University Press., 1991. 10) Miller, Mary K. "Tracking Pterosaurs." Earth August 1997 11) Padian, Kevin. "The Flight of Pterosaurs." Natural History December 1988: 58-65. 12) Schober, Wifried. The Lives of Bats. New York: Arco Publishing Inc., 1984. 13) Seeley, H.G. Dragons of the Air: An account of extinct flying reptiles. Toronto: Dover Publications, Inc., 1967. 14) Soper, Tory and John Sparks. Owls: Their Natural and Unnatural History. London: David and Charles, 1989. 15) Unwin, David M. " Pterosaur locomotion: Joggers or waddlers?" Nature 7 May 1987:13-14. 16) Zimmer, Carl. "Masters of an Ancient Sky." Discovery Febuary 1994: 42-54.

© Patrick Lyons 1998