Randall Irmis
Randall Irmis
Dept of Geology & Geophysics and Natural History Museum of Utah, University of Utah
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Best practices for justifying fossil calibrations
JF Parham, PCJ Donoghue, CJ Bell, TD Calway, JJ Head, PA Holroyd, ...
Systematic Biology 61 (2), 346-359, 2012
The origin and early radiation of dinosaurs
SL Brusatte, SJ Nesbitt, RB Irmis, RJ Butler, MJ Benton, MA Norell
Earth-Science Reviews 101 (1-2), 68-100, 2010
Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira
SJ Nesbitt, CA Sidor, RB Irmis, KD Angielczyk, RMH Smith, LA Tsuji
Nature 464 (7285), 95-98, 2010
A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs
RB Irmis, SJ Nesbitt, K Padian, ND Smith, AH Turner, D Woody, A Downs
Science 317 (5836), 358-361, 2007
Axial skeleton ontogeny in the Parasuchia (Archosauria: Pseudosuchia) and its implications for ontogenetic determination in archosaurs
RB Irmis
Journal of vertebrate Paleontology 27 (2), 350-361, 2007
A complete skeleton of a Late Triassic saurischian and the early evolution of dinosaurs
SJ Nesbitt, ND Smith, RB Irmis, AH Turner, A Downs, MA Norell
science 326 (5959), 1530-1533, 2009
A critical re‐evaluation of the Late Triassic dinosaur taxa of North America
SJ Nesbitt, RB Irmis, WG Parker
Journal of Systematic Palaeontology 5 (2), 209-243, 2007
High-resolution U–Pb ages from the Upper Triassic Chinle Formation (New Mexico, USA) support a diachronous rise of dinosaurs
RB Irmis, R Mundil, JW Martz, WG Parker
Earth and Planetary Science Letters 309 (3-4), 258-267, 2011
Early ornithischian dinosaurs: the Triassic record
RB Irmis, WG Parker, SJ Nesbitt, J Liu
Historical Biology 19 (1), 3-22, 2007
The precise temporal calibration of dinosaur origins
CA Marsicano, RB Irmis, AC Mancuso, R Mundil, F Chemale
Proceedings of the National Academy of Sciences 113 (3), 509-513, 2016
Tyrant dinosaur evolution tracks the rise and fall of Late Cretaceous oceans
MA Loewen, RB Irmis, JJW Sertich, PJ Currie, SD Sampson
PloS one 8 (11), e79420, 2013
The Late Triassic pseudosuchian Revueltosaurus callenderi and its implications for the diversity of early ornithischian dinosaurs
WG Parker, RB Irmis, SJ Nesbitt, JW Martz, LS Browne
Proceedings of the Royal Society B: Biological Sciences 272 (1566), 963-969, 2005
Non-dinosaurian Dinosauromorpha
MC Langer, SJ Nesbitt, JS Bittencourt, RB Irmis
Geological Society of London Special Publication 379, 157-186, 2013
Hindlimb osteology and distribution of basal dinosauromorphs from the Late Triassic of North America
SJ Nesbitt, RB Irmis, WG Parker, ND Smith, AH Turner, T Rowe
Journal of Vertebrate paleontology 29 (2), 498-516, 2009
Evaluating hypotheses for the early diversification of dinosaurs
RB Irmis
Earth and Environmental Science Transactions of the Royal Society of …, 2010
Delayed recovery of non-marine tetrapods after the end-Permian mass extinction tracks global carbon cycle
RB Irmis, JH Whiteside
Proceedings of the Royal Society B: Biological Sciences 279 (1732), 1310-1318, 2012
Empirical evidence for stability of the 405-kiloyear Jupiter–Venus eccentricity cycle over hundreds of millions of years
DV Kent, PE Olsen, C Rasmussen, C Lepre, R Mundil, RB Irmis, ...
Proceedings of the National Academy of Sciences 115 (24), 6153-6158, 2018
The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona
RB Irmis, SJ Nesbitt, WG Parker
Mesa Southwest Museum Bulletin 9, 63-88, 2005
Early crocodylomorpha
RB Irmis, SJ Nesbitt, HD Sues
Geological Society, London, Special Publications 379 (1), 275-302, 2013
Extreme ecosystem instability suppressed tropical dinosaur dominance for 30 million years
JH Whiteside, S Lindström, RB Irmis, IJ Glasspool, MF Schaller, ...
Proceedings of the National Academy of Sciences 112 (26), 7909-7913, 2015
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