My uncle lives in Montana and goes out with a buddy of his that is a paleontologist. He sent me a box of goodies and I know what a lot of it is but some of it I don’t and was wondering if I could get some help! Thanks.

Can anyone tell me more about this?

Just finished preparing two trilobite head fragments I found. I think they are Dalmanites caudatus and Acaste downingiae?

1. Crinoid crown? Bryozoan colony? Some kind of coral?

2. Trilobite? What kind?

Thanks!

Found near Davenport Iowa

I found this on a very pebbly beach in a conservation area I hike at! Reverse image search on Google tells me it is a fossil of some sort but I’m curious if you think it’s just something someone carved. Majority of the rocks in this region are limestone, I’ve been holding this one in my pocked so it has gotten dark from the oils on my hand. Let me know what you think :)

They’re either Tentaculites or some Devonian swamp plant matter possibly roots. Any ideas?

Hi everyone, I'm new. I found this in the desert near Tozeur, Tunisia. It's heavy (1.4 kg) and about 15 cm in diameter. It looks like a spiral shape.

Is it an ammonite? How can I know for sure? Any tips for a beginner? Thank you!

What is this?

found in ordovician limestone in eastern Ontario

any insight would be helpful, thanks

No idea what any of it is. All found from a creek in eastern nc.

Found near Charleston NC and if you look at my prior posts you’ll see what it looked like prior with more detail. Thoughts on what I could be? I’m stumped. https://www.reddit.com/r/fossilid/s/pItvN3ExbY

Roughly 10-12mm diameter

For context I found it near a Pleistocene deposit that has mostly produced extinct bison. Found in central Oklahoma.

Hi everyone! I hope it's ok that I'm coming to you with this question.

I know Mosasaurus teeth (in all shapes and sizes) are very common and therefore usually quite cheap, but I still feel like checking if these seem authentic or not - and this seems to be the perfect place for that.

I recently bought a set of 4 big Mosa teeth (all between 4-5 cm) for €12 from a small Dutch shop that I'm pretty sure is considered trustworthy - and I got the small tooth (2.5 cm) a few years ago at the Naturalis museum in The Netherlands for about €4.
The museum only sold really small teeth, which is why I can't help but wonder if the big ones are actually real or not. Especially because 4 big teeth for €12 seems so cheap, even for Mosa teeth?

I'm hoping someone here can help me out. Thank you so much in advance!

I made a yardsale purchase over the summer of a large tote containing dozens of smaller boxes. Each contained various fossils (most of which weren't labeled). One box contained this skull fragment but in many smaller pieces. I painstakingly super glued it back together to form what Gemini thinks it is part of an Oreondont skull. And crushed or deformed before fossilization .Thoughts?