Concretions or gastropods ?

[Denis Arcand]

At first, I thought I had discovered concretions. However, after finding several consistently shaped specimens – larger and more pronounced in front, smaller and rounder in back and leaning to one side– I took additional photos of the one that most closely resembled a gasteropod. None of my finds show any discernible details of a shell. They were found in the Nicolet River Formation in Quebec.

 

I they are gastropods, what are the possible species ?

 

 

 

 

 

 

 

 

 

 

 

 

Edited April 13 by Denis Arcand

[Mahnmut]

Hi,

 hard to be sure, but I would tend to call them gastropod (steinkerns?).

Best regards,

J

[Denis Arcand]

22 minutes ago, Mahnmut said:

Hi,

 hard to be sure, but I would tend to call them gastropod (steinkerns?).

Best regards,

J

 

Thanks @Mahnmut , Do you know what species these might be?

[Mahnmut]

Sorry, no idea.

I just think I can make out hints of spiral shapes and the general similarity of proportions you mentioned and therefore tend to agree with the hope that these may be more than concretions, there is not much detail to base an ID on.

But someone more familiar with your region and/or the diversity of gastropods may be able to say more, or completely disagree.

If you have the means to cut one of your specimens in half that could help to find out (gastropod or not, not so much species ID).

Best regards,

J

[Denis Arcand]

Thanks  @Mahnmut  for trying to help me. So far you are the only one responding to this post, I guess no one else wants to get their feet wet on this one. 

 

It kind of resemble pelecypod (Exogyra ponderosa), but it is not the right period 

 

I'll try to cut one, I have nothing to lose