Palynologically calibrated vertebrate record from North Dakota consistent with abrupt dinosaur extinction at the Cretaceous-Tertiary boundary

Abstract

Research Article| January 01, 2001 Palynologically calibrated vertebrate record from North Dakota consistent with abrupt dinosaur extinction at the Cretaceous-Tertiary boundary Dean A. Pearson; Dean A. Pearson 1Pioneer Trails Regional Museum, Bowman, North Dakota 58623, USA Search for other works by this author on: GSW Google Scholar Terry Schaefer; Terry Schaefer 1Pioneer Trails Regional Museum, Bowman, North Dakota 58623, USA Search for other works by this author on: GSW Google Scholar Kirk R. Johnson; Kirk R. Johnson 2Denver Museum of Nature and Science, Denver, Colorado 80205, USA Search for other works by this author on: GSW Google Scholar Douglas J. Nichols Douglas J. Nichols 3U.S. Geological Survey, MS 939, Box 25046, Denver, Colorado 80225, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Dean A. Pearson 1Pioneer Trails Regional Museum, Bowman, North Dakota 58623, USA Terry Schaefer 1Pioneer Trails Regional Museum, Bowman, North Dakota 58623, USA Kirk R. Johnson 2Denver Museum of Nature and Science, Denver, Colorado 80205, USA Douglas J. Nichols 3U.S. Geological Survey, MS 939, Box 25046, Denver, Colorado 80225, USA Publisher: Geological Society of America Received: 16 Jun 2000 Revision Received: 26 Sep 2000 Accepted: 03 Oct 2000 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2001) 29 (1): 39–42. https://doi.org/10.1130/0091-7613(2001)029<0039:PCVRFN>2.0.CO;2 Article history Received: 16 Jun 2000 Revision Received: 26 Sep 2000 Accepted: 03 Oct 2000 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Dean A. Pearson, Terry Schaefer, Kirk R. Johnson, Douglas J. Nichols; Palynologically calibrated vertebrate record from North Dakota consistent with abrupt dinosaur extinction at the Cretaceous-Tertiary boundary. Geology 2001;; 29 (1): 39–42. doi: https://doi.org/10.1130/0091-7613(2001)029<0039:PCVRFN>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 SocietyGeology Search Advanced Search Abstract New data from 17 Cretaceous-Tertiary (K-T) boundary sections and 53 vertebrate sites in the Hell Creek and Fort Union Formations in southwestern North Dakota document a 1.76 m barren interval between the highest Cretaceous vertebrate fossils and the palynologically recognized K-T boundary. The boundary is above the formational contact at 15 localities and coincident with it at two, demonstrating that the formational contact is diachronous. Dinosaurs are common in the highest Cretaceous vertebrate samples and a partial dinosaur skeleton in the Fort Union Formation is the highest recorded Cretaceous vertebrate fossil in this area. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.