Fossil that I have not seen before and would appreciate help in identifying

[BobCow]

Located on the shore of Otisco Lake and had not seen this previously

[Rockwood]

They're brachiopods, for openers. 

[Fossildude19]

They look like internal molds of Spiriferid brachiopods.
Pretty common in that area.

[Rockwood]

Internal molds I agree with, but the shape doesn't suggest spiriferid to me. 

[Fossildude19]

1 hour ago, Rockwood said:

Internal molds I agree with, but the shape doesn't suggest spiriferid to me. 

 

 

These shapes do suggest that,  to me:

 

 

 

[Rockwood]

4 minutes ago, Fossildude19 said:

These shapes do suggest that,  to me:

Yes. I see that now. The other two is what I focused on I guess. 

[Harry Pristis]

I see internal casts and partial external molds . . . no internal molds.

[Fossildude19]

Yes. Internal casts. Steinkerns, if you like.

[BobCow]

Thank you for all the responses.  We do find plenty of the Spiriferid brachiopods, both internal and external casts.  The round objects were the fossils that we have not seen before..are they connected to the Spiriferid brachiopods?

 

 

 

[Rockwood]

@Tidgy's Dad Might have an opinion on those internal molds. 

[Tidgy's Dad]

Bit difficult to be certain, but I think spiriferid internal casts are the most likely id. 

[Rockwood]

@BobCow The distinction between an internal mold and a cast is sort of an ongoing friendly dispute. For me wood burning stoves and engine blocks are cast. Fossils are presented as molds of the designated surface. 

[Fossildude19]

5 hours ago, BobCow said:

 The round objects were the fossils that we have not seen before..are they connected to the Spiriferid brachiopods?

 

What do you mean by round objects?

If you mean these:

 

 

These are the "beak" sections of the brachiopods.

 

 

 

Source of image

 

[Rockwood]

3 hours ago, Fossildude19 said:

These are the "beak" sections of the brachiopods.

These are the "beak" sections of brachiopods. The complete shape is not visible. The example given can only be assumed. 

[BobCow]

Thank you for all your input.  Find plenty of the brachiopods in the creek and on the beach at our cottage but had not seen the 'beak' in this form before.