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Remarkable Preservation of Undigested Muscle Tissue Within a Late Cretaceous Tyrannosaurid Coprolite from Alberta, Canada

2003; Society for Sedimentary Geology; Volume: 18; Issue: 3 Linguagem: Inglês

10.1669/0883-1351(2003)018 2.0.co;2

1938-5323

Karen Chin, David A. Eberth, Mary H. Schweitzer, Thomas A. Rando, W. J. SLOBODA, Jack Horner,

Pleistocene-Era Hominins and Archaeology

Other| June 01, 2003 Remarkable Preservation of Undigested Muscle Tissue Within a Late Cretaceous Tyrannosaurid Coprolite from Alberta, Canada KAREN CHIN; KAREN CHIN 1Department of Geological Sciences and CU Museum, University of Colorado at Boulder, UCB 265, Boulder, CO 80309. Karen.Chin@colorado.edu Search for other works by this author on: GSW Google Scholar DAVID A. EBERTH; DAVID A. EBERTH 2Royal Tyrrell Museum of Palaeontology, Box 7500, Drumheller, Alberta T0J 0Y0, Canada Search for other works by this author on: GSW Google Scholar MARY H. SCHWEITZER; MARY H. SCHWEITZER 3Department of Microbiology & Museum of the Rockies, Montana State University, Bozeman, MT 59717 Search for other works by this author on: GSW Google Scholar THOMAS A. RANDO; THOMAS A. RANDO 4Department of Neurology & Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305 Search for other works by this author on: GSW Google Scholar WENDY J. SLOBODA; WENDY J. SLOBODA 5Royal Tyrrell Museum of Palaeontology, Box 7500, Drumheller, Alberta T0J 0Y0, Canada * Current address: Mesozoic WRex Repair, Box 367, Warner, Alberta, T0K 2L0, Canada. Search for other works by this author on: GSW Google Scholar JOHN R. HORNER JOHN R. HORNER 6Museum of the Rockies, Montana State University, Bozeman, MT 59717 Search for other works by this author on: GSW Google Scholar Author and Article Information KAREN CHIN 1Department of Geological Sciences and CU Museum, University of Colorado at Boulder, UCB 265, Boulder, CO 80309. Karen.Chin@colorado.edu DAVID A. EBERTH 2Royal Tyrrell Museum of Palaeontology, Box 7500, Drumheller, Alberta T0J 0Y0, Canada MARY H. SCHWEITZER 3Department of Microbiology & Museum of the Rockies, Montana State University, Bozeman, MT 59717 THOMAS A. RANDO 4Department of Neurology & Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305 WENDY J. SLOBODA * Current address: Mesozoic WRex Repair, Box 367, Warner, Alberta, T0K 2L0, Canada. 5Royal Tyrrell Museum of Palaeontology, Box 7500, Drumheller, Alberta T0J 0Y0, Canada JOHN R. HORNER 6Museum of the Rockies, Montana State University, Bozeman, MT 59717 Publisher: SEPM Society for Sedimentary Geology Accepted: 09 Oct 2002 First Online: 03 Mar 2017 Online ISSN: 1938-5323 Print ISSN: 0883-1351 Society for Sedimentary Geology PALAIOS (2003) 18 (3): 286–294. https://doi.org/10.1669/0883-1351(2003)018 2.0.CO;2 Article history Accepted: 09 Oct 2002 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation KAREN CHIN, DAVID A. EBERTH, MARY H. SCHWEITZER, THOMAS A. RANDO, WENDY J. SLOBODA, JOHN R. HORNER; Remarkable Preservation of Undigested Muscle Tissue Within a Late Cretaceous Tyrannosaurid Coprolite from Alberta, Canada. PALAIOS 2003;; 18 (3): 286–294. doi: https://doi.org/10.1669/0883-1351(2003)018 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyPALAIOS Search Advanced Search Abstract Exceptionally detailed soft tissues have been identified within the fossilized feces of a large Cretaceous tyrannosaurid. Microscopic cord-like structures in the coprolitic ground mass are visible in thin section and with scanning electron microscopy. The morphology, organization, and context of these structures indicate that they are the fossilized remains of undigested muscle tissue. This unusual discovery indicates specific digestive and taphonomic conditions, including a relatively short gut-residence time, rapid lithification, and minimal diagenetic recrystallization. Rapid burial of the feces probably was facilitated by a flood event on the ancient coastal lowland plain on which the fecal mass was deposited. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.