The final version is now out with a free pdf:
David M. Lovelace, Scott A. Hartman, Paul D. Mathewson, Benjamin J. Linzmeier & ÂWarren P. Porter (2020)
Modeling Dragons: Using linked mechanistic physiological and microclimate models to explore environmental, physiological, and morphological constraints on the early evolution of dinosaurs.
PLoS ONE 15(5): e0223872.
doi: https://doi.org/10.1371/journal.pone.0223872
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0223872
Free pdf:
https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0223872&type=printable
We employed the widely-tested biophysiological modeling software, Niche Mapperâ to investigate the metabolic function of the Late Triassic dinosaurs Plateosaurus and Coelophysis during global greenhouse conditions. We tested a variety of assumptions about resting metabolic rate, each evaluated within six microclimate models that bound paleoenvironmental conditions at 12Â N paleolatitude, as determined by sedimentological and isotopic proxies for climate within the Chinle Formation of the southwestern United States. Sensitivity testing of metabolic variables and simulated âmetabolic chamberâ analyses support elevated âratite-likeâ metabolic rates and intermediate âmonotreme-likeâ core temperature ranges in these species of early saurischian dinosaur. Our results suggest small theropods may have needed partial to full epidermal insulation in temperate environments, while fully grown prosauropods would have likely been heat stressed in open, hot environments and should have been restricted to cooler microclimates such as dense forests or higher latitudes and elevations. This is in agreement with the Late Triassic fossil record and may have contributed to the latitudinal gap in the Triassic prosauropod record.ÂÂ
Modeling Dragons: Using linked mechanistic physiological and microclimate models to explore environmental, physiological, and morphological constraints on the early evolution of dinosaurs.
PLoS ONE 15(5): e0223872.
doi: https://doi.org/10.1371/journal.pone.0223872
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0223872
Free pdf:
https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0223872&type=printable
We employed the widely-tested biophysiological modeling software, Niche Mapperâ to investigate the metabolic function of the Late Triassic dinosaurs Plateosaurus and Coelophysis during global greenhouse conditions. We tested a variety of assumptions about resting metabolic rate, each evaluated within six microclimate models that bound paleoenvironmental conditions at 12Â N paleolatitude, as determined by sedimentological and isotopic proxies for climate within the Chinle Formation of the southwestern United States. Sensitivity testing of metabolic variables and simulated âmetabolic chamberâ analyses support elevated âratite-likeâ metabolic rates and intermediate âmonotreme-likeâ core temperature ranges in these species of early saurischian dinosaur. Our results suggest small theropods may have needed partial to full epidermal insulation in temperate environments, while fully grown prosauropods would have likely been heat stressed in open, hot environments and should have been restricted to cooler microclimates such as dense forests or higher latitudes and elevations. This is in agreement with the Late Triassic fossil record and may have contributed to the latitudinal gap in the Triassic prosauropod record.ÂÂ
On Thu, Oct 3, 2019 at 12:55 PM Ben Creisler <bcreisler@gmail.com> wrote:
Ben CreislerA new paper in preprint form with free pdf:David M. Lovelace, Scott A. Hartman, Paul D. Mathewson, Benjamin J. Linzmeier & Warren P. Porter (2019)
Modeling Dragons: Using linked mechanistic physiological and microclimate models to explore environmental, physiological, and morphological constraints on the early evolution of dinosaurs.
bioRxiv 790980 (preprint)
doi: https://doi.org/10.1101/790980
https://www.biorxiv.org/content/10.1101/790980v1
Free pdf:
https://www.biorxiv.org/content/biorxiv/early/2019/10/02/790980.full.pdf
We employed the widely-tested biophysiological modeling software, Niche Mapperâ to investigate the metabolic function of Late Triassic dinosaurs Plateosaurus and Coelophysis during global greenhouse conditions. We tested them under a variety of assumptions about resting metabolic rate, evaluated within six microclimate models that bound paleoenvironmental conditions at 12Â N paleolatitude, as determined by sedimentological and isotopic proxies for climate within the Chinle Formation of the southwestern United States. Sensitivity testing of metabolic variables and simulated "metabolic chamber" analyses support elevated "ratite-like" metabolic rates and intermediate "monotreme-like" core temperature ranges in these species of early saurischian dinosaur. Our results suggest small theropods may have needed partial to full epidermal insulation in temperate environments, while fully grown prosauropods would have likely been heat stressed in open, hot environments and should have been restricted to cooler microclimates such as dense forests (under any vegetative cover) or those seen at higher latitudes and elevations. This is in agreement with the Late Triassic fossil record and may have contributed to the latitudinal gap in the Triassic prosauropod record.
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