Paleonet: mysterious lower Carboniferous fossil from Alabama

Chuck Ciampaglio chuck.ciampaglio at
Tue Nov 2 17:28:50 GMT 2010

Some type of chondrichthyan crushing dention, probably with worn enameloid. Chuck 
Dr. Chuck Ciampaglio 
Associate Professor of Earth and Env. Science 
Wright State University - Lake Campus 
7600 Lake Campus Drive 
Celina, OH 45822 
Office #: 419-586-0357 
Fax #: 419-586-0368. 

----- Original Message -----
From: Roger K Pabian <rpabian at>
Date: Tuesday, November 2, 2010 12:45 pm
Subject: Re: Paleonet: mysterious lower Carboniferous fossil from Alabama
To: PaleoNet <paleonet at>

They appear to be denticles or shagreen from a shark or related fish. I've seen similar things in the Pennsylvanian in the midcontinent US.
Roger K. Pabian

k -----paleonet-bounces at wrote: -----

To: "PaleoNet" <paleonet at>
From: "David Kopaska-Merkel" <davidkm at>
Sent by: paleonet-bounces at
Date: 11/02/2010 09:55AM
Subject: Paleonet: mysterious lower Carboniferous fossil from Alabama

I have posted this photograph on a personal blog primarily devoted to things other than paleontology. But it's a serious paleontology question. What are these things?
David C Kopaska-Merkel
Geological Survey of Alabama
Box 869999
Tuscaloosa AL 35486-6999
fax 205-349-2861

Got questions? sednet might have answers:

From: paleonet-bounces at [mailto:paleonet-bounces at] On Behalf Of Roger Thomas
Sent: Wednesday, October 27, 2010 11:21 PM
To: PaleoNet
Subject: Paleonet: Endangered species: Nautilus and other of interest topaleontologists (GSA meeting)
Dear Colleagues:
     Are you going to the Geological Society of America's annual meeting in Denver?  Are you interested in endangered species, particularly the paleontologist's favorite living cephalopod?  If so, please see the announcement below that has been brought to my attention.

     For the first time ever, two officials from US Fish and Wildlife, both experienced in work with CITES and listing endangered species, are being sent to GSA to attend the Friends of the Cephalopods meeting.  Their purpose is to discuss the possibility of listing Nautilus as an endangered species at the next CITES meeting.  Peg Yacobucci will be chairing the meeting.  This is a chance for paleontologists of all stripes to see and understand how endangered species become listed.  Without doubt Nautilus and Allonautilus (accepted at the last major international cephalopod meeting) both really need the help.   Other groups of special interest to paleontologists might need help down the road (brachiopods, the tuatara, for example), so this first engagement with US officials at a GSA meeting could serve as a template.

     Kind regards,    Roger
Roger D. K. Thomas
John Williamson Nevin Professor of Geosciences 
Secretary-General, International Palaeontological Association
Department of Earth and Environment
Franklin & Marshall College
P.O. Box 3003
Pennsylvania 17604-3003
Office telephone:               717-291-4135
Office fax:                                             717-291-4186
Home telephone:              717-560-0486
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