Fossil Detectives Close the Case on Prehistoric Spider
Fossil Detectives Close the Case on Prehistoric Spider
Footprints by Nadia Drake, Wired News, March 27, 2014.
http://www.wired.com/2014/03/prehistoric-spider-footprints/
The papers mentioned in this article are:
Alf, R. A., 1968, A spider trackway from the Coconino
Formation, Seligman, Arizona. Bulletin of the Southern
California Academy of Sciences. vol. 67. pp. 125-128.
Sadler, C. J., 1993, Arthropod Trace Fossils from the
Permian De Chelly Sandstone, Northeastern Arizona.
Journal of Paleontology. vol. 67, no. 2, pp. 240-249.
Yours,
Paul H.
