Comment on "Lethally Hot Temperatures During the Early Triassic Greenhouse"

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Comment on "Lethally hot temperatures during the Early Triassic greenhouse".

Sun et al. (Reports, 19 October 2012, p. 366) reconstructed Permian to Middle Triassic equatorial seawater temperatures. After correct temporal positioning of their data points, their presumed trends of temperature changes, and hence their assumption of a one-to-one relationship between putative "lethally hot" seawater temperatures and a disputable equatorial "eclipse" of some organisms, are no...

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Lethally hot temperatures during the Early Triassic greenhouse.

Global warming is widely regarded to have played a contributing role in numerous past biotic crises. Here, we show that the end-Permian mass extinction coincided with a rapid temperature rise to exceptionally high values in the Early Triassic that were inimical to life in equatorial latitudes and suppressed ecosystem recovery. This was manifested in the loss of calcareous algae, the near-absenc...

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Response to comment on "lethally hot temperatures during the Early Triassic greenhouse".

Goudemand et al. replot a subset of our well-constrained data using a new Early Triassic biostratigraphic scheme based on a lower-resolution ammonoid zonation scheme and hypothetical ammonoid-conodont correlation to produce a less distinct seawater temperature history. We dispute their unsubstantiated correlation and, consequently, their allegations.

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ژورنال

عنوان ژورنال: Science

سال: 2013

ISSN: 0036-8075,1095-9203

DOI: 10.1126/science.1232924