Randall B. Irmis
University of Utah, Salt Lake City, UT
Activity
2025
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NEW MONSTERSAUR SPECIMENS FROM THE KAIPAROWITS FORMATION OF UTAH REVEAL UNEXPECTED RICHNESS OF LARGE-BODIED LIZARDS IN LATE CRETACEOUS NORTH AMERICA
35 Laramidia: Biota, Stratigraphy, and Paleogeography of the Late Cretaceous of Western North America ITuesday, 20 May 202510:15 AM - 12:00 PMCascade E
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AN ARTICULATED HINDLIMB OF DROMOMERON ROMERI (LAGERPETIDAE) AND ITS IMPLICATIONS FOR INTERPRETING DINOSAUROMORPH FOOTPRINTS
12 Undergraduate Research PostersMonday, 19 May 20258:00 AM - 5:30 PMBallroom A&B
2024
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CAVE SEDIMENT CORE PRESERVES 2200 YEARS OF ALPINE WILDFIRE HISTORY IN NORTHERN UTAH, USA
T163 Karst Sedimentary, Paleoclimate, and Historical RecordsTuesday, 24 September 20248:00 AM - 11:05 AM212B
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MICROVERTEBRATES DISPLAY HIGH DIVERSITY AND DISPARITY IMMEDIATELY PRIOR TO THE END-TRIASSIC MASS EXTINCTION IN EASTERN PANTHALASSA
T15 Understanding the Links between Life, Biogeochemical Cycles, and Environmental Feedbacks throughout the MesozoicSunday, 22 September 20248:00 AM - 12:00 PM207B
2023
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DETERMINING THE STRATIGRAPHIC PROVENANCE OF EX-SITU FOSSILS USING PORTABLE X-RAY FLUORESCENCE TECHNOLOGY: A CASE STUDY FROM THE MIDDLE CAMBRIAN OF WESTERN UTAH, USA
T57 Future Leaders in PaleontologySunday, 15 October 20231:30 PM - 5:30 PM303
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THE FIRST LATE TRIASSIC PISTOSAUR FROM NORTH AMERICA
14 Paleontologic Advances in the Cordilleran RegionThursday, 18 May 20238:00 AM - 12:00 PMWhitney Peak Ballroom 3
2022
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GIANT ICHTHYOSAURS PROVIDE INSIGHTS INTO LATE TRIASSIC MARINE ECOSYSTEM STRUCTURE
15 D4. Recent Advances in Paleontology, Paleoecology, and PaleoclimatologyWednesday, 16 March 20228:00 AM - 12:00 PMWRI 148
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CARBON ISOTOPIC VARIABILITY IN PALEOSOLS AND ITS EFFECTS ON RECONSTRUCTING PCO2: INSIGHTS FROM THE UPPER TRIASSIC CHINLE FORMATION
9 Undergraduate Research (Posters)Tuesday, 15 March 20228:30 AM - 6:00 PMStudent Union Ballroom A/B
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GRALLATOR TRACKS AS A WINDOW TO GROWTH STRATEGIES OF SMALL-BODIED EARLY THEROPODS
9 Undergraduate Research (Posters)Tuesday, 15 March 20228:30 AM - 6:00 PMStudent Union Ballroom A/B
2021
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THE LAST TRIASSIC GIANT? A LATE RHAETIAN ICHTHYOSAUR FROM NEW YORK CANYON, NEVADA, USA
T74 New Perspectives on Phanerozoic Mass Extinctions and Environmental Perturbations IIMonday, 11 October 20218:00 AM - 12:00 PME143/E144
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HUNTING FOR THE LATEST LARGE-BODIED ICHTHYOSAUR IN THE UPPER TRIASSIC LUNING FORMATION, MINERAL COUNTY, NEVADA, USA
11 From the Miogeocline to the Sagebrush Ocean: Life through Time in the Basin and Range ProvinceThursday, 13 May 20218:30 AM - 12:30 PMJohnNLouie.com Room
2020
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MAMMAL-LIKE CROCS: DO EXTINCT CROCODYLOMORPHS OVERLAP WITH THE MORPHOSPACE OF LIVING MAMMALS?
14 The Changing Face of Paleontology II: In Honor of the Career Contribution of Dr. Richard L. SquiresTuesday, 12 May 20201:30 PM - 5:30 PMSan Rafael
2019
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A MULTIPROXY APPROACH TO PALEOHYDROLOGIC AND PALEOCLIMATE RECONSTRUCTION OF TRIASSIC LACUSTRINE BASINS OF ARGENTINA
T193 Lakes of the World through Time and Space (Posters)Tuesday, 24 September 20199:00 AM - 6:30 PMHall AB, North Building
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LA-ICPMS U-PB GEOCHRONOLOGY OF DETRITAL ZIRCON GRAINS FROM THE CHINLE FORMATION (COLORADO PLATEAU CORING PROJECT)
T65 Advances in Using Sedimentary Data to Constrain the Timing and Rates of Geologic Events and Processes IISunday, 22 September 20191:30 PM - 5:30 PMRoom 222BC, North Building
2018
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OLD BONES AND NEW TOOLS: ENGAGING FAMILY AUDIENCES IN THE DISCOVERY OF A NEW CRETACEOUS CROCODYLIAN THROUGH ORIGINAL FOSSILS AND TOUCH SCREEN ACCESS TO CT SCAN DATA
T228 Innovations in Using Fossil Collections for Deep Time Education and OutreachWednesday, 7 November 20188:00 AM - 12:00 PMRoom 233
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IS MERCURY FROM “BACKGROUND” VOLCANISM PRESERVED IN THE SEDIMENTARY RECORD? A TEST USING FLUVIO-LACUSTRINE STRATA FROM THE UPPER TRIASSIC OF ARGENTINA
T80 Global Change: Evolution and Extinctions in the TriassicMonday, 5 November 20188:00 AM - 12:00 PMRoom 136-137
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THE HISTOLOGICAL ONTOGENY OF ORNAMENTED TURTLES FROM THE KAIPAROWITS FORMATION OF UTAH
112 D19. Paleontology, Vertebrate Paleontology (Posters)Monday, 5 November 20189:00 AM - 6:30 PMHalls J-K
2017
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CONSTRUCTING A PRECISE TIMESCALE FOR NON-MARINE SEDIMENTARY STRATA USING U-PB GEOCHRONOLOGY OF REDEPOSITED VOLCANIC ZIRCONS
T352 Improvements and Challenges in Geochronology: Organizing the Past while Planning for the Future (Posters)Wednesday, 25 October 20179:00 AM - 6:30 PMHalls 4EF
2015
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UPPER TRIASSIC STRATA OF THE SOUTHERN UINTA MOUNTAINS, NORTHEASTERN UTAH: A LINK BETWEEN SEDIMENTARY RECORDS OF THE COLORADO PLATEAU AND WYOMING
16 The Continental Triassic: Sedimentary and Paleobiologic Records throughout the Rocky Mountain RegionSaturday, 23 May 20158:00 AM - 10:55 AMSouth Ballroom
2014
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NEW ANKYLOSAURID DINOSAURS (ORNITHISCHIA: THYREOPHORA) FROM THE UPPER CAMPANIAN KAIPAROWITS FORMATION OF SOUTHERN UTAH AND IMPLICATIONS FOR INTERCONTINENTAL DISPERSAL PATTERNS OF ANKYLOSAURIDAE
204 Paleontology: New Discoveries in Vertebrate Trace and Body Fossils (Posters)Tuesday, 21 October 20149:00 AM - 6:30 PMExhibition Hall C
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NEW GEOCHRONOLOGIC CONSTRAINTS ALLOW COMPARISONS BETWEEN LATE TRIASSIC BIOTA AND PALEOENVIRONMENT FROM WESTERN AND EASTERN NORTH AMERICA
12 Contextualizing the Importance of the Newark Supergroup to Understanding the Biotic Change in the Early MesozoicThursday, 10 April 20141:00 PM - 4:40 PMAssembly Hall
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THE EARLY EVOLUTION OF CROCODYLOMORPHA: NEARLY COMPLETE SKELETONS FROM THE LATE TRIASSIC OF NORTH CAROLINA DEMONSTRATE CONSERVATION IN THE EARLY BODY PLAN OF A SUCCESSFUL CLADE
12 Contextualizing the Importance of the Newark Supergroup to Understanding the Biotic Change in the Early MesozoicThursday, 10 April 20141:00 PM - 4:40 PMAssembly Hall
2013
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THE PAST WORLDS GALLERY: INTERPRETING PALEOECOLOGY AND EVOLUTION AT THE NEW NATURAL HISTORY MUSEUM OF UTAH
T178 Dinosaurs & Diamonds: Celebrating 125 Years of Geoscience in MuseumsMonday, 28 October 20131:00 PM - 5:00 PMRoom 203
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NON-MARINE MESOZOIC ECOSYSTEMS OF NORTHEASTERN AFRICA: NEW INSIGHTS FROM THE NORTHWEST PLATEAU OF ETHIOPIA
T187 Paleoclimate and Biotic Change in Africa, Mesozoic to the PresentMonday, 28 October 20131:00 PM - 5:00 PMRoom 605
2012
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DIAGENETIC IRON OXIDE CONCRETIONS ASSOCIATED WITH VERTEBRATE FOSSILS IN THE UPPER TRIASSIC CHINLE FORMATION OF NORTHERN NEW MEXICO: IMPLICATIONS FOR PALEOENVIRONMENTAL AND DIAGENETIC HISTORY
259 Paleontology: Biostratigraphy and TaphonomyWednesday, 7 November 20121:30 PM - 5:30 PM217BC
2010
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TIME SCALE CALIBRATION BENEFITTING FROM THE MATTINSON TECHNIQUE (CA-TIMS) APPLIED TO VOLCANIC ZIRCONS
T282 EARTHTIME: In Honor of the Contributions of James Mattinson to High-Precision U-Pb GeochronologyWednesday, 3 November 20101:30 PM - 5:30 PMRoom 207
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NEW U-PB ZIRCON AGES FROM THE CHINLE FORMATION (WESTERN US) REVISE UNDERSTANDING OF LATE TRIASSIC TERRESTRIAL VERTEBRATE EVOLUTION
T160 Geochronology of the American West: In Honor of the Careers of Bill Cobban and John Obradovich and the Roots of EARTHTIMETuesday, 2 November 20108:00 AM - 12:00 PMRoom 205
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TERRESTRIAL TETRAPOD VERTEBRATE PALEOEOCOLOGY ACROSS THE PERMIAN-TRIASSIC BOUNDARY AND ITS RELATIONSHIP TO THE GLOBAL CARBON CYCLE
T70 Links between Mesozoic Climate and BiodiversitySunday, 31 October 20101:30 PM - 5:30 PMRoom 603
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ISOTOPIC EVIDENCE FOR LATE CRETACEOUS ECOSYSTEM VARIABILITY IN CAMPANIAN CONTINENTAL SEDIMENTS OF SOUTHERN UTAH
T47 Links between Mesozoic Climate and Biodiversity (Posters)Sunday, 31 October 20108:00 AM - 6:00 PMHall D
2009
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ECOSYSTEM INSTABILITY DURING THE RISE OF DINOSAURS: EVIDENCE FROM THE LATE TRIASSIC IN NEW MEXICO AND ARIZONA
T180 High-Resolution Terrestrial and Marine Geochemical Proxies of Global Change: Progress, Problems, and Utility (Posters)Tuesday, 20 October 20099:00 AM - 6:00 PMHall A
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EVALUATING LATE TRIASSIC FAUNAL CHANGE AND THE RISE OF DINOSAURS: EXAMPLES FROM THE CHINLE FORMATION OF NORTH-CENTRAL NEW MEXICO
50 Paleontology: Extinction & TurnoverSunday, 18 October 20091:30 PM - 5:30 PMPortland Ballroom 256