Acorn fossil?

[S IL THer]

This is the size of a small acorn w/o cap........fossilized/petrified acorn?

 

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[fossis]

It does look like one, I have seen a petrified pecan, it had the shell intact, with a broken spot on one side.

Fossis...............

 

[Mosasaurfiend]

Well I'm not certain but it looks a bit like an algae fruiting body.
This is a pic of a friends, found here in Tx to compare.

See what you think.

I did a search on fossil acorns and only found one pic but
it would not enlarge and way too tiny to really see it.

 

[Harry Pristis]

My guess is that it is a tumbled solitary coral which originally looked something like this one:

​

 

[S IL THer]

Like I say, I'm not sure what this is. The lines flowing from the bald cap just seem similar to an acorn. see attached photo..

Thanks for the input!

 

[naturegirl]

My totally uneducated unwarrented opinion : The lines in the first pic are in a pattern that I haven't seen in an acorn, acorns are fairly smooth? And the lines more cosmetic? I'm here to learn, thanks for posting this fossil, it's cute!

naturegirl

 

[Harry Pristis]

My totally uneducated unwarrented opinion : The lines in the first pic are in a pattern that I haven't seen in an acorn, acorns are fairly smooth? And the lines more cosmetic? I'm here to learn, thanks for posting this fossil, it's cute!
naturegirl

Good point, 'naturegirl' -- acorn lines are superficial only.

The more I look at this object, the more convinced I am that it is a stream-tumbled solitary coral. Perhaps it is from a stubby horn coral like Heliophyllum or Bethanyphyllum (both Silurian). Lots of Silurian fossils in Indiana and Ohio streams. Not so many in Illinois.

 

[S IL THer]

Thanks, nice to know what it is, and as the part you said it was tumbled...I found this over 45 years ago when I
was playing in some river rock gravel in a driveway.

 

[mamabear]

My guess is that it is a tumbled solitary coral which originally looked something like this one:

​

I agree, looks like coral. nice piece to add to a collection.

 

[cryptic]

I found mine 4 weeks ago on a beach in Northern Ontario. Very similar except it is not very round and has something stuck on the side of it. No idea what it is.

 

[Kantuckkeean]

That is obviously a fossilized squirrel tooth stuck on the side.

 

[diggummup]

I know this is an old post but I wanted to add my photo in here since it looks like the same thing only with dark streaks in it, no history since it was purchased in a box of stuff from an estate sale.-

 

[Red_desert]

I have something looks like that, found in Indiana.