2-headed dinosaur fossil found in Yixian Formation(N.E. China),article link

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seeker - 19 Jan 2007 19:40 GMT

http://news.yahoo.com/s/livescience/20070119/sc_livescience/ancientreptilehadtwoheads

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Dawid Mazurek - 22 Jan 2007 13:08 GMT

That's ain't no dino ;)

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deowll - 23 Jan 2007 03:27 GMT

> That's ain't no dino ;)

Which raises the question of what is it? A lizard?

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pete - 23 Jan 2007 05:03 GMT

on Mon, 22 Jan 2007 21:27:57 -0600, deowll <deowll@bellsouth.net> sez:

>> That's ain't no dino ;)

>Which raises the question of what is it? A lizard?

I'm going with "a 150-million year old marine reptile called Hyphalosaurus
lingyuanensis"...

Big head, big eyes, small body. Looks perinatal. Also, from the pic,
it doesn't look clear enough to say that it's really one, and not
one plus part of a second, based on the spine; though I suppose
the odds of the heads being aligned that way would be pretty slim
for two independent individuals.

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vincent@triumf[munge].ca Pete Vincent
Disclaimer: all I know I learned from reading Usenet.

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Gautam Majumdar - 23 Jan 2007 07:02 GMT

>> That's ain't no dino ;)
>
> Which raises the question of what is it? A lizard?

It was a hatchling choristodere; a group of extinct aquatic reptiles with
long necks. See :

http://www.newscientist.com/article/dn10827-twoheaded-lizard-spied-in-a-fossil.html

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gautam

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Natural Science Forum / Biology / Paleontology / January 2007

2-headed dinosaur fossil found in Yixian Formation(N.E. China),article link