Paleonet: Help with some fossils

Claire H Milne c.milne at
Mon Jun 23 17:23:19 GMT 2014

A turbidity current could leave the assemblage oriented in the same best guess for the fossils is possibly hyoliths, which are cone-shaped animals, Phylum Mollusca.



 From: "edrioasteroid at" <edrioasteroid at>
To: PaleoNet <paleonet at> 
Cc: "pkuxue at" <pkuxue at>; PaleoNet <paleonet at> 
Sent: Monday, June 23, 2014 6:47 AM
Subject: Re: Paleonet: Help with some fossils

I was thinking rootlets because of the black organic film, or perhaps a pseudo fossil similar to cone in cone structure.  Could it be a fossil soil?

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On Jun 23, 2014, at 9:40 AM, "David Kopaska-Merkel" <davidkm at> wrote:

> I don't think these are trace fossils. Many are on this slab, but it seems none cross cut each other. Also, one appears to retain some dark material.
> Cephalopods are possible, but it seems every single one is facing the same way. Is that really true? I'm not sure how that could happen.
> David
> David C Kopaska-Merkel
> Geological Survey of Alabama
> Box 869999
> Tuscaloosa AL 35486-6999
> 205-247-3695
> fax 205-349-2861
> -----Original Message-----
> From: Paleonet [mailto:paleonet-bounces at] On Behalf Of Jinzhuang Xue
> Sent: Thursday, June 12, 2014 1:37 AM
> To: paleonet
> Subject: Paleonet: Help with some fossils
> Dear all, 
>     The attached is a picture showing some conical things horizontally laying on the bedding plane of sandstones. They look like stromatolite but they are not.  But, are they trace fossils? sedimentary structures? or anything else?  We are wondering if anyone here could help us for identifying them.  Has anyone found similar things before?  Thanks a lot in advance.  The age of the rock is Late Devonian Famennian, and the depositional environments may be swamps near coastal area.  
> All the best,
> Jinzhuang Xue
> Peking University
>         pkuxue at
>           2014-06-12
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