[Rockhounds] ID help

[R. Peter Richards]

They look like calcareous worm tubes, but I wonder why a little worm  
such as would fit in the hole would make such a thick-walled tube.   
An awful lot of metabolic work....


On Jul 15, 2008, at 11:56 AM, Lawrence Rush wrote:

> Help.......all you Paleontologists...
>
> Is this an Aragonite concretion or an example of worm tubes? I'm  
> leaning toward the concretion origin, but would like a professional  
> opinion.
>
> (Note the centered holes in each of the "tubes")
>
> thanks....Larry
>
>
> http://www.connroxminerals.com/ammonite.html
>
> -- 
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___________________________________
R. Peter Richards
rpr at heidelberg.edu
Morphological crystallographer





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