Dinosaur tracks Dinosaur Tracks by Tony Thulborn, 1990. Chapman and Hall, 11 New Fetter Lane, London EC4P 4EE, UK, 410 pages. US$85.00. Catastrophic episodes in earth history Catastrophic Episodes in Earth History. Claude C. Albritton Jr., 1989. Chapman and Hall, 29 West 35th Street, New York, New York, 10001-2291 USA. 221 pages, U.S. $29.95