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Re: Reptilian brain (free pdf)



Hmmmm....you may have a point.

Dan

On 4/23/2015 12:05 PM, don ohmes wrote:

I'm thinking that's mammalian behavior...


------------------------------------------------------------------------
*From: * Dan Chure <danchure@easilink.com>;
*To: * <bcreisler@gmail.com>; <dinosaur@usc.edu>;
*Subject: * Re: Reptilian brain (free pdf)
*Sent: * Thu, Apr 23, 2015 5:42:16 PM

I make a point of  only using my reptilian brain.

D

On 4/23/2015 9:01 AM, Ben Creisler wrote:
> Ben Creisler
> bcreisler@gmail.com <javascript:return>
>
>
> A recent paper that may be of interest, in open access:
>
> Robert K. Naumann, Janie M. Ondracek, Samuel Reiter, Mark
> Shein-Idelson, Maria Antonietta Tosches, Tracy M. Yamawaki & Gilles
> Laurent (2015)
> The reptilian brain.
> Currrent Biology 25(8): R317–R321
> doi:10.1016/j.cub.2015.02.049
> http://www.sciencedirect.com/science/article/pii/S0960982215002183
>
>
>
> Carl Sagan’s amusing words of wisdom notwithstanding — is the H-bomb
> not also a product of the cerebral cortex? — is the reptilian brain
> really just a mammalian brain missing most of the parts? Some 320
> million years ago, the evolution of a protective membrane surrounding
> the embryo, the amnion, enabled vertebrates to develop outside of
> water and thus to invade new terrestrial niches. These amniotes were
> the ancestors of today’s mammals and sauropsids (reptiles and birds).
> Present-day reptiles are a diverse group of more than 10,000 species
> that comprise sphenodons (‘Tuatara’), lizards, snakes, turtles and
> crocodilians. Although turtles were once thought to be the most
> ‘primitive’ among reptiles, current genomic data point toward two
> major groupings: the Squamata (lizards and snakes); and a group
> comprising both the turtles and the Archosauria (dinosaurs, modern
> birds and crocodilians) (Figure 1). Dinosaurs inhabited the Earth from
> the Triassic (230 million years ago), at a time when the entire
> landmass formed a single Pangaea. They flourished from the beginning
> of the Jurassic to the mass extinction at the end of the Cretaceous
> (65 million years ago), and birds are their only survivors...
>
>