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Fossil Identification


Tooth at Resteigne (Be)


2Ronalds   04-09-2011 om 22:26

2Ronalds
Junior Lid
Lid sinds: 11-06-2011
Berichten: 25





I found what I think must be a tooth. In the Devonian, no reptiles were around, so if it is a tooth, it is probably shark or some large fish. It was very distictly black against the grey matrix. Regrettably the tip was broken when I found it, the inside dull, but black. It is 20x11mm across and 22mm high. The edge seems a bit sharper, but it is not serrated. There is some paralel striping appr. 1 mm apart lengthwise.

Does anyone recognise this fossil?

____________________________
Ronald

 
sjaak   15-09-2011 om 19:57

sjaak
Senior Lid
Lid sinds: 28-03-2006
Berichten: 5677

I do not think this is a tooth, but the internal mold of bivalve.

____________________________
Groet,

Niels

 
Frederik   16-09-2011 om 19:50

Frederik
Beheerder
Fotobeheerder
Lid sinds: 28-09-2003
Berichten: 8630

Since specific 'tooth' textures or structures are missing, and considering the location, tooth can virtually be ruled out as an option. Instead, I believe it is obviously an internal mould of a mollusc.
However, I would not opt for bivalve too fast
Have you considered the option that it could be cephalopod? More specifically the body chamber.


____________________________
Try to learn something about everything and everything about
something (TH Huxley)

 
2Ronalds   17-09-2011 om 18:34

2Ronalds
Junior Lid
Lid sinds: 11-06-2011
Berichten: 25

Thanks Niels and Frederik,

I am considering it may be the interal mould of a mollusc. However, if it is an internal mould, the shell should be on the negative, which it is not, or the shell has desolved, in which case there should be a hollow space where it used to be, which is not there, or the internal mould was refossilised. Do you think this is likely at that location?

Am I right? Thanks for helping me think about it, and I hope you will reply again.

____________________________
Ronald

 
HarryPristis   22-10-2011 om 03:33

HarryPristis
Junior Lid
Lid sinds: 06-08-2011
Berichten: 36

This object reminds me of a pen (Penna sp.) shell which is fairly common in the Late Eocene of Florida.

____________________________
“A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber room of his library, where he can get it if he wants it.”
--Sherlock Holmes (Arthur Conan Doyle) in The Sign of Four

 
Frederik   22-10-2011 om 13:31

Frederik
Beheerder
Fotobeheerder
Lid sinds: 28-09-2003
Berichten: 8630

Hmmm... I might see traces of calcite (shell?) bottom pic, left edge of the matrix.

Anyway, though I see the resemblance with Pinna fossils this one is most definitely no Pinne given the age.

My bet would still be on cephalopod.

____________________________
Try to learn something about everything and everything about
something (TH Huxley)

 
Bram   22-10-2011 om 13:52

Bram
Senior Lid
Lid sinds: 06-11-2005
Berichten: 2560

Maybe it's an internal mould of an inarticulate brachiopod, like Lingula? The very faint ribs make me think this.

 




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