I would like to ask, what is the most exact geologic age setting for _Tyrannosaurus rex_? Lower limit would be 66.0 mya of course, but what about its earliest fossil remains? One study gave age of some 67.4 mya, but is that generally agreed upon? Thank you in advance, Tom
Thomas R. Holtz, Jr.
Email: email@example.com Phone: 301-405-4084
Principal Lecturer, Vertebrate Paleontology
Office: Geology 4106, 8000 Regents Dr., College Park MD 20742
Dept. of Geology, University of Maryland
Faculty Director, Science & Global Change Program, College Park Scholars
Office: Centreville 1216, 4243 Valley Dr., College Park MD 20742
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
8000 Regents Drive
University of Maryland
College Park, MD 20742-4211 USA