Shear, William A.; Jeram, Andrew J.; Selden, Paul.
(New York, NY : American Museum of Natural History, 1998)
"Remains of arthropod legs with a pentagonal cross section and serrate margins, found at three Silurian and Devonian sites (Ludford Lane, Wales; Rhynie, Scotland; and Gilboa, New York, USA), are herein attributed to ...