Fossil orthoceras

I took my two boys camping next to a little creek just upstream from the Illinois River. Five minutes after setting up camp my oldest son found this about 20ft off shore.

Orthoceras fossil closeup

Closeup view of the fossil.

Measuring the orthoceras

It looks like a snake to us, but we aren't sure.

Fossil Collector: Frawley78

Location: Illinois River tributary, Illinois

[Editor's Note: Beautiful find! As you might have guessed from the title, what you found is actually an orthoceras fossil. Orthoceras are cephalopod relatives of the squid and what you are seeing is a cross section of their long spiral shell. Search  for Orthoceras in the search box above and you will see other examples to compare it with.]

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Illinois fossil mammal find.

Looks like a toe/nail or tooth of a large mammal?

An unexpected fossil bone.

Just out walking the dog in a wooded area we frequent. Took a path through the woods have never taken before. Just came across this while walking out of the woods and into a clearing. Was lightly embedded in the soil.

Fossil Collector: Kevinr

Location: Channahon, Illinois

Found in a wooded area about two hundred yards away from the I and M Canal in Channahon, Illinois. There is quite a bit of rock on either side of the canal which was dug out in the process of digging the canal over 100 years ago. This part of Illinois has primarily sedimentary rock. Not sure of the geologic period.

[In response to the editor's question regard the very straight-looking break line on the bone.]

As far as looking like a butcher cut, that was what I was thinking when I first picked it up. But this is most definitely rock. I did push at it with both an awl and knife, and there is no flexibility in that area (or any other) whatsoever. And, the large light looking piece, is sandstone. I think the point that looks like the butcher cut may be just a fracture from where it broke off of the rest of it. Wouldn’t it have taken a long time to fossilize, ruling out any kind of a butcher cut?

What you do you think? Please leave a response and help us identify this find.

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Mammal tooth are where you find them.

A huge mammal tooth found while hunting Indian artifacts in Illinois.

Could it be a cow tooth or an Ice Age mammal?

I found this along the banks of Bureau Creek near Tiskilwa, Illinois. It is hard like a rock and seems old.

Collector: Jerry M.

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Strange fossil found in rock piles near a pond in Port Byron, Illinois.

This strange fossil was found in rock piles near a pond in Port Byron, Illinois. I believe the snail was found there too, possibly in my backyard in Port Byron not the pond though.

Possible Illinois trilobite or crinoid fossil

Any suggestions as to the type os fossil this is? Please post your ideas with the response button below.

Submitted by Fossil collector: jessst

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