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Earth Science

D-Index
35
Citations
5568
World Ranking
7528
National Ranking
2569

Overview

Randall B. Irmis is affiliated with the University of Utah in the United States and has a primary research focus within the field of Earth and Planetary Sciences. Their work spans several subfields, predominantly paleontology, with significant contributions also in nature and landscape conservation, geophysics, atmospheric science, and global and planetary change.

The main topics covered in their research include paleontology and evolutionary biology, evolution and paleontology studies, paleontology and stratigraphy of fossils, ichthyology and marine biology, geological and geochemical analysis, geology and paleoclimatology research, and amphibian and reptile biology.

Some of the recent papers authored or co-authored by Randall B. Irmis include:

  • Enigmatic dinosaur precursors bridge the gap to the origin of Pterosauria, 2020, Nature
  • Evidence for the Carnian Pluvial Episode in Gondwana: New multiproxy climate records and their bearing on early dinosaur diversification, 2020, Gondwana Research
  • U-Pb zircon geochronology and depositional age models for the Upper Triassic Chinle Formation (Petrified Forest National Park, Arizona, USA): Implications for Late Triassic paleoecological and paleoenvironmental change, 2020, Geological Society of America Bulletin
  • LA-ICPMS U-Pb geochronology of detrital zircon grains from the Coconino, Moenkopi, and Chinle formations in the Petrified Forest National Park (Arizona), 2020, Geochronology
  • The paleoclimatic context for South American Triassic vertebrate evolution, 2021, Journal of South American Earth Sciences

Frequent co-authors collaborating with Randall B. Irmis are:

  • Sterling J. Nesbitt
  • Adriana Cecilia Mancuso
  • Roland Mundil
  • Keegan M. Melstrom
  • Nathan D. Smith

Publication venues frequent for Randall B. Irmis include:

  • Abstracts with Programs - Geological Society of America
  • The Anatomical Record
  • Journal of South American Earth Sciences
  • Journal of Vertebrate Paleontology
  • Palaeogeography Palaeoclimatology Palaeoecology

Best Publications

  • Best practices for justifying fossil calibrations

    James F. Parham;James F. Parham;James F. Parham;Philip C. J. Donoghue;Christopher J. Bell;Tyler D. Calway

  • The origin and early radiation of dinosaurs

    Stephen L. Brusatte;Sterling J. Nesbitt;Randall B. Irmis;Richard J. Butler

  • A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs.

    Randall B. Irmis;Sterling J. Nesbitt;Kevin Padian;Nathan D. Smith

  • AXIAL SKELETON ONTOGENY IN THE PARASUCHIA (ARCHOSAURIA: PSEUDOSUCHIA) AND ITS IMPLICATIONS FOR ONTOGENETIC DETERMINATION IN ARCHOSAURS

    Randall B. Irmis

  • A Complete Skeleton of a Late Triassic Saurischian and the Early Evolution of Dinosaurs

    Sterling J. Nesbitt;Sterling J. Nesbitt;Nathan D. Smith;Nathan D. Smith;Randall B. Irmis;Randall B. Irmis;Alan H. Turner

  • The precise temporal calibration of dinosaur origins

    Claudia Alicia Marsicano;Randall Irmis;Adriana Cecilia Mancuso;Roland Mundil

  • High-resolution U-Pb ages from the Upper Triassic Chinle Formation (New Mexico, USA) support a diachronous rise of dinosaurs

    Randall B. Irmis;Roland Mundil;Jeffrey W. Martz;William G. Parker

  • Early ornithischian dinosaurs: the Triassic record

    Randall B. Irmis;William G. Parker;Sterling J. Nesbitt;Jun Liu

  • A critical re‐evaluation of the Late Triassic dinosaur taxa of North America

    Sterling J. Nesbitt;Randall B. Irmis;William G. Parker

  • Tyrant dinosaur evolution tracks the rise and fall of Late Cretaceous oceans.

    Mark A. Loewen;Randall B. Irmis;Joseph J. W. Sertich;Philip J. Currie

  • Hindlimb Osteology and Distribution of Basal Dinosauromorphs from the Late Triassic of North America

    Sterling J. Nesbitt;Randall B. Irmis;William G. Parker;Nathan D. Smith

  • The Late Triassic pseudosuchian Revueltosaurus callenderi and its implications for the diversity of early ornithischian dinosaurs

    William G Parker;Randall B Irmis;Sterling J Nesbitt;Jeffrey W Martz

  • Evaluating hypotheses for the early diversification of dinosaurs

    Randall B. Irmis

  • Delayed recovery of non-marine tetrapods after the end-Permian mass extinction tracks global carbon cycle

    Randall B. Irmis;Jessica H. Whiteside

  • Empirical evidence for stability of the 405-kiloyear Jupiter-Venus eccentricity cycle over hundreds of millions of years.

    Dennis V. Kent;Paul E. Olsen;Cornelia Rasmussen;Christopher Lepre

  • Non-dinosaurian Dinosauromorpha

    Max C. Langer;Sterling J. Nesbitt;Jonathas S. Bittencourt;Jonathas S. Bittencourt;Randall B. Irmis

  • Extreme ecosystem instability suppressed tropical dinosaur dominance for 30 million years

    Jessica H. Whiteside;Sofie Lindström;Randall B. Irmis;Randall B. Irmis;Ian J. Glasspool;Ian J. Glasspool

  • Origin of a widespread marine bonebed deposited during the middle Miocene Climatic Optimum

    Nicholas D. Pyenson;Randall B. Irmis;Jere H. Lipps;Lawrence G. Barnes

  • Caveats on the Use of Fossil Calibrations for Molecular Dating: A Comment on Near et al.

    James F. Parham;Randall B. Irmis

  • Late Triassic Tanystropheids (Reptilia, Archosauromorpha) from Northern New Mexico (Petrified Forest Member, Chinle Formation) and the Biogeography, Functional Morphology, and Evolution of Tanystropheidae

    Adam C. Pritchard;Alan H. Turner;Sterling J. Nesbitt;Randall B. Irmis

Frequent Co-Authors

Sterling J. Nesbitt
Sterling J. Nesbitt Virginia Tech
Roland Mundil
Roland Mundil Berkeley Geochronology Center
Dennis V. Kent
Dennis V. Kent Lamont-Doherty Earth Observatory
Paul E. Olsen
Paul E. Olsen Lamont-Doherty Earth Observatory
George E. Gehrels
George E. Gehrels University of Arizona
John W. Geissman
John W. Geissman The University of Texas at Dallas
Alan H. Turner
Alan H. Turner Stony Brook University
James F. Parham
James F. Parham California State University, Fullerton
Michael J. Benton
Michael J. Benton University of Bristol
Max C. Langer
Max C. Langer Universidade de São Paulo

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