Found this very large bone while exploring a cave in a sinkhole plain in Missouri. It was found about 60 to 80 feet down in a pebble based stream bed with light mud covering it. Found on private land with land owners permission. Looking to ID what species it’s from. From the research I’ve been able to do I suspect it’s from the ice age. Weighs approximately 3 kg. 13 inches in length, 6 inches at its smallest diameter 10 inches in diameter at the largest part before the “knuckle”

What is that? Does anybody know?

What is this fossil??

I’m new to this. I have lots to learn. Would appreciate any insights. :)

What is this? I picked up from auction. Check the pic with tags for details.

It sounds like wood when I knock on it.

It all seems to be one piece and strangely smoot.

The “tooth” is somehow fused.
What

I am at a loss with what to label this. There is a pair of curved pieces with indents in them layered on top of each other, but looking almost shorn apart, like cards being fanned out in a deck. My first thought was some cephalopod remains that were damaged before or after fossilization. Im also wondering...the area around the deep indent at the bottom of pic 1...is that matrix to be removed or part of the organism/fossil? Im wanting to ID this primarily to understand how to approach this specimen. I find the mated curves very intriguing and id hate to mess that up. Trammel Fossil Park, lower Corryville formation area. Southwestern Ohio.

Pictured - Front/Back

I found it in the northwest of las vegas. Ai tells me it could be an ancient horn coral when the valley was a sea

Found this in Nice, France on the beach!

Found in southern Ottawa , Ontario, Canada

Found in lower hunter nsw Australia

Rock & fossil idiot here but my kid is obsessed with them. What do you all think?

Just like the title, I found these 2 rocks in some gravel mix and they are about 30-40mm long. The formation looks organic, but I'm not sure! Any ideas?

This is a piece I really care about! It was given to me as a gift, but I don't understand its value or whether it can be fixed :(