[Rockhounds] Salmon Creek poop (NOT)

[Jay Bates]

Many petrified woods do not show visible plant material nor traces of 
minerals associated wood. They are called limb casts. I think if the 
coprolites come from the right formation associated with dinosaurs like 
those found in Utah, there is a good possibility they are casts of real 
dino dung. If not, what are they then?  Doubts disprove nothing.


pmodreski at aol.com wrote:
> That's a great article about coprolites, Tim, thanks for sharing the link.
>
> Aside from the Salmon Creek "coprolites" probably not being real coprolites, I talked with Karen Chin once when she gave a lecture about coprolites at CU (I mean the lecture was at CU, not the droppings)... and she expressed some doubt about whether the warty-looking chalcedony nodules found in western Utah and thereabouts and generally known among rockhounds as coprolites, also really are.? For a couple of the same reasons: no phosphate content, and no visible partly-digested plant or animal fragments embedded within them.? I don't think anyone has really subjected those Jurassic supposed-coprolites to any in-depth scientific study--Karen said she personally had never studied those--and until someone does, I think their status will remain questionable; though all the rockhounds recognize them and rockshops sell them as?"coprolites".
>
> Pete
>
>
> -----Original Message-----
> From: Tim <nospam at orerockon.com>
> To: 'Rockhounds List' <rockhounds at lists.drizzle.com>
> Sent: Mon, 1 Jun 2009 8:58 am
> Subject: [Rockhounds] Salmon Creek poop (NOT)
>
>
>
> http://www.earthmagazine.org/earth/article/68-7d8-8-1c
>
> A very well thought out article on the "coprolites" from Salmon Creek WA.
>
>
> Tim Fisher 
> Ore-ROCK-On! 
> Email address at http://OreRockOn.com <http://orerockon.com/> 
>
>
>
>
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