Dan On 4/21/2015 10:37 AM, Victoria & Jerrold Alpern wrote:
Thanks! I had thought both legs of AMNH 5027 were replicas of CM 9380, which I assume is the holotype we sold to the Carnegie in the 1940s. Now I’m going to have to revise what I tell visitors! They often assume that what they see are “fakes”, by which they mean copies. They are happy to learn that most of our 4th Floor fossils are genuine, although I always add that most fossils are themselves casts of the original bones. Jerry Alpern On Apr 21, 2015, at 12:06 PM, Thomas R. Holtz, Jr. <tholtz@umd.edu> wrote:Half of the tail (and all the legs) of AMNH 5027 are imaginary. And incorrectly restored in both cases, unfortunately. http://static1.squarespace.com/static/51bf1cd3e4b0a897bf54112b/51bf3928e4b09edc5f83d0af/51bf5cdae4b05a61167e0279/1382741309923/Tyran nosaurus+AMNH+vs+CM.jpg?format=750w Thomas R. Holtz, Jr. Email: tholtz@umd.edu Phone: 301-405-4084 Office: Centreville 1216 Senior Lecturer, Vertebrate Paleontology Dept. of Geology, University of Maryland http://www.geol.umd.edu/~tholtz/ Fax: 301-314-9661 Faculty Director, Science & Global Change Program, College Park Scholars http://www.geol.umd.edu/sgc Fax: 301-314-9843 Mailing Address: Thomas R. Holtz, Jr. Department of Geology Building 237, Room 1117 University of Maryland College Park, MD 20742 USA-----Original Message----- From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] On Behalf Of Victoria & Jerrold Alpern Sent: Tuesday, April 21, 2015 11:49 AM To: dariusnau@gmx.at Cc: dinosaurtom2015@seznam.cz; DML Subject: Re: Exact length of Sue How does the length of FMNH PR 2081 compare to AMNH 5027? Thanks. Sincerely, Jerry Alpern AMNH Tour Guide vjalp@mindspring.com 917-623-1446 On Apr 21, 2015, at 6:42 AM, Darius Nau <dariusnau@gmx.at> wrote:FMNH PR 2081 seems to be almost exactly 12.3m (40.35feet) long. That is the length given by Hutchinson et al. (2011), who laser-scanned the skeleton, and one gets almost the exact same figure when measuring the axial length in Scott Hartman's (2013) skeletal reconstruction of the same specimen.These are probably the most accurate representations of its total length that are available, and I'm willing to trust them overamuseum website any day.As regards intervertebral spacings, they must surely add to the total length, although how much is a good question. I'm a bit inthedark as to how much these estimates and reconstructions already account for them tough.REFERENCES: Brochu, Christopher A. (2003): Osteology of Tyrannosaurus rex: Insights from a Nearly Complete Skeleton and High-Resolution Computed Tomographic Analysis of the Skull. Memoir (Society of Vertebrate Paleontology), Vol. 7 pp. 1-138 Hartman, Scott (2013): A T. rex named Sue 3.0. http://scotthartman.deviantart.com/art/A-T-rex-named-Sue-3-0-124138016 (accessed 12 April 2015) Hutchinson, John R.; Bates, Karl T.; Molnar, Julia; Allen, Vivian; Makovicky, Peter J. (2011): A Computational Analysis of Limb and Body Dimensions in Tyrannosaurus rex with Implications for Locomotion, Ontogeny, and Growth. PLoS ONE, Vol. 6 (10) pp. 1-20 Larson, Peter (2008): Variation and Sexual Dimorphism in Tyrannosaurus rex. In: Larson, Peter; Carpenter, Kenneth: Tyrannosaurus rex the Tyrant King. Bloomington pp. 103-128 On 2015-04-21 07:29, Poekilopleuron wrote:Good day,thank you all for your reply to my previous question (I assume JackHorner's given date of 1903 must be a mistake). I have anotherquestion >regarding tyrannosaurs - what is the exact length of specimen FMNH 2081 (Sue)? >I've seen various values ranging from 12,2 to 12,9 metres (about 41 to 43 >feet), which one is correct? Or is it unknown at such a precise manner given >that we don't currently understand how wide are intervertebral "gaps" >and/or how much would soft tissue add to the actual length of the skeleton? Thank >you very much, TomYours sincerely, Darius Nau -- dariusnau@gmx.at http://www.paleo.keepfree.de