Rare fossil......... needs identifying ..........please

[Sacajewea]

Hi I'm new to this site and hoping someone can identify this fossil. I was told its a very rare oceanic fossil but can't find it any where. I will enclose a picture of it, It was found in Peterborough Ontario near a man made river we have running thru our city. I was told a while ago what it was but have forgotten, heres hoping someone can help me out with it. Thx a bunch Tried to upload a close up but it wouldn't let me sorry. will try again .

 

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[Sacajewea]

another fossil. Forgot to mention it is about 5 in. long and about 3.5 in. deep . It is totally flat on the underside and about 2.5 in. in height.

 

[Sacajewea]

I am posting other Fossail finds I have found here inPeterborough Ontario. Hope you enjoy them. In these pics u have a variety of fossils, scat , marine fossils as well as pottery. Hope you enjoy . The pic that is a close up in 3 frames appears to be a birds egg fossil. U decide.

 

[Sacajewea]

I'm still waiting for someone to identify the fossil, have I stumped all of you?

 

[Plumbata]

The first piece looks like a cast of a prehistoric fern frond. It appears to be silt/sandstone likely deposited in a wet swamp-like biome during a major flood event back in the Carboniferous. One can see the carbonized black plant matter still stuck in the piece, so I would imagine it is a piece of waste rock from above, below, or the middle of a coal seam that was removed from a load of excavated coal and then dumped. Could have been eroded from the strata in the river but I can't tell. I wouldn't call it rare, but it is a nice find.