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Re: [dinosaur] T. rex bite force + toxic plant dinosaur extinction theory + more comments and corrections

On 04/05/2018 12:48 PM, Ben Creisler wrote:
> Commentary
> Michael Frederick  & Gordon G. Gallup, Jr. (2017)
> The demise of dinosaurs and learned taste aversions: The biotic revenge
> hypothesis.
> Ideas in Ecology and Evolution 10(1):  47Ãââ54
> doi:10.4033/iee.2017.10.9.c
> https://urldefense.proofpoint.com/v2/url?u=https-3A__ojs.library.queensu.ca_index.php_IEE_article_view_6802&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=tms6YJHTuaE78jF311Tv4ks2nZUeF0z80mi05U-V2KE&s=0k4fgYtVd4PC2i0yr7VaH8mZ1wj98Qw0l7nZ4Nz_oqQ&e=
> Numerous hypotheses have been advanced to explain the worldwide extinction
> event that led to the disappearance of the dinosaurs. There is considerable
> empirical support for the well-known asteroid impact hypothesis, and
> volcanic eruptions in the Deccan Traps have also been implicated.
> Increasingly, theories involving multiple causes are being considered, yet
> few of these consider how the cognitive and behavioral abilities of certain
> classes of animals may have differed in ways that allowed some to survive
> while others perished. Here we advance the hypothesis along with supporting
> evidence that the emergence of toxic plants coupled with an inability to
> form learned taste aversions may have contributed to the extinction of
> dinosaurs.

Has anyone read through this?


The asteroid impact hypothesis implies that the
effects should have been both widespread and abrupt.
Therefore, if the demise of the dinosaurs was occasion-
ed by a colossal asteroid impact of this magnitude the
fossil record should be very clear in revealing a sudden
disappearance of dinosaurs. It would also imply that not
only dinosaurs would have been adversely affected, but
that many other creatures would have followed suit. The
evidence, however, suggests that dinosaurs began going
extinct before the asteroid impact (âExtinction-The
Asteroid-impact,â 2016), and Sloan et al. (1986) have
argued that the disappearance of dinosaurs probably
spanned a period of at least seven million years. While
other species and groups, such as mammals, were
clearly affected by the asteroid impact, no terrestrial
fauna were as profoundly affected as the dinosaurs
(MacLeod et al. 1997). Thus, rather than being sudden
and widespread, the mass extinction appears to have
been something that happened in a more gradual way,
and that affected some species more than others.

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