Found on Lea Island in NC.

Found on Lake Michigan by my son, are the fossil concretions?

So my family was in a zoo on that mountain called Hochlantsch. And in the parking lot already my son found a rock looking like petrified wood. Looked like but I wasn't sure, said, if we already found this, there had to be more. Well, we found some more... Even a piece that looks like it had woodworms. Some minerals we'll have to check later, too.

Oh, and there was so much of these, those few we took won't be missed, I think/hope. People were actually walking on them and they were all around, they broke the rock for the from rubble built trail. We could see the layers of stone and inbetween there were brown trees. No one looked at these, no one seemed to be aware. Not even a sign was there.

Found on top of terminal moraine (last ice age) in Nijmegen, the Netherlands. I suspect a tooth fragment but if that's true, and if so of what animal... clueless

genuinely one of the hardest photogrammetry scans i’ve done, because of the size, but now i know how to scan very small objects!

Found these in my grandmothers collection of her shells. Any ideas?

I don’t know might be something cool

I found it in a creek.

Found this in shell limestone at a location (near Berlin) known for nothosaur fossils but the roundness of it makes me think it’s something else, any ideas?

I was at Myrtle Beach (South Carolina), and I was digging in the sand since I was looking for shark teeth, then I found this, but it looked interesting, so I put it in my pocket, but I don't know how to tell fossils yet, so if you can, let me know what this is

My student found this rock, came asking if it was a fossil. Is it anything? Or is it just corrosion?

I've found this on a beach, likely brought to shore by sea currents.

Mediterranean Sea if that matters.

(Last picture it's the bottom)

I’d like to ask for your help with the identification of this fossil. I found it twenty years ago in northern Poland near Gdansk and kept it in the drawer since then. I picked it up by a lake which was formed by glaciers if that’s of any importance.
The stone is approximately 3 cm in each direction.
Thanks!

Ventured into the Newark Super Group. Found some Upper Triassic aged fossils from the Lockatong Formation in SE Pennsylvania. Specifically Conchostracan, or Clam Shrimp. These are bivalved crustaceans that lived in a freshwater environment. Also included a couple photos of non-fossilized animals spotted on the trip.

Bought two Mosasaur teeth at a fair for the kids. Are they real? Any idea where they were found? How old are they? The woman selling didn't know anything.

Found in a river in NZ. Hoping its my first fossil find?

What yall tink

Found near Lyme Regis.

I found this, it was in the north east USA. Can't recall exactly where but was looking to use it for an art piece and happened to catch me that it looked like a tooth, then further investigation looks like an impression of some aquatic with sharp teeth thoughts?

Sorry if this is a stupid question. Just curious. Probably just a rock.

found at fort clinch beach in FL

Found this is the Sulphur River in North Texas. Some people have found whole intact specimens in the walls.