according to Braman et al. (1995) the last known individual of _T. rex_ (RTMP 81.12.1 - "Huxley Rex") was found exactly 10.5 metres (34.5 feet) below the K-Pg boundary in the Scollard Formation. I would like to ask, how much time does this gap represent? Was the sedimentation rate in the Scollard Fm. the same as in the Hell Creek Fm., where the rate is about 3 cm/1000 years (or 1 meter per ~30 000 years)? Does that mean this individual of _T. rex_ died some 300 000 years before the Chicxulub asteroid impact? Thank you in advance, Tom
Thomas R. Holtz, Jr.
Email:Âtholtz@umd.eduÂÂÂÂÂÂÂÂ Phone: 301-405-4084
Principal Lecturer, Vertebrate Paleontology
Office: Geology 4106, 8000 Regents Dr., College Park MD 20742
Dept. of Geology, University of Maryland
Fax: 301-314-9661ÂÂÂÂÂÂ ÂÂÂÂÂÂÂ
Faculty Director, Science & Global Change Program, College Park Scholars
Office: Centreville 1216, 4243 Valley Dr., College Park MD 20742
Mailing Address:ÂÂÂÂÂÂÂ Thomas R. Holtz, Jr.
ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ Department of Geology
ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ Building 237, Room 1117
ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ 8000 Regents Drive
ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ University of Maryland
ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ College Park, MD 20742-4211 USA