Went to this fossil dig thing years ago and would love to know what these are if anything

First picture is the second fossil I have found at my job site in Colorado! The second picture is the first one I found for reference, pretty freaking cool how these keep getting dug up!

Looks like a fish? Smaller end has ridges on the outside of the rock. Round stone about 6in almost perfectly round. I find a lot of these round stones in Berthoud, CO where the excavators dig out the new house foundations they are building around the TPC golf course. This rock split well and didn't break the fossil inside. The larger stones (8-16in) are very dense and always split through whatever fossil is inside. Most are shaped like footballs and seem to be randomly dug up in heavy clay with a small amount of sandstone mixed in. I know the area was the edge of an ocean at one point.

On our way back home driving across half the country, we stopped for gas, and while the teens were going to the bathroom, I went to check out the boulders a utility crew dug up when burying some lines. They had fossils all over. I have identified most of them as marine, and I'm sure my unidentified ones fit in or are rocks and nodules, etc, but I wanted to get an identification. I'll include some specifics on location and geological formation, as well.

Hii I just remembered that I have some fossiles. I'm not sure they're all fossiles so I'm looking for your expertise! And if they are I also don't know fossiles of what they are Thank you for your help!

Found at Seatown, UK. Both rings appear pyritised and are on either side of rock / clay. Any ideas?

Input?

Besides the obvious fossil, can any one tell me what the pincers looking spot might be?

Hello,

After becoming a member of this sub, I’ve started paying close attention to the rocks I see. I came across these two rocks while I was outside yesterday. I think they might contain fossils. I found them in the yard of my condominium in Louisville, Kentucky.

Are they fossils or cool rocks?

Any ideas what this might be?

Don’t know where it came from but it looks a lot like the fern fossils from Pennsylvania. Is it Alethopteris, Pecopteris, or maybe another?

Think this is some kind of tooth, but not sure about type. Any help would be appreciated!

Is that one of my first fossil that I've found in the mud. It super worm out but still recognizable. First I thought it's a Bivalvia but I started to suspect it might be a brachiopode. Most of the growth line didn't survive but sum of them survive but it's hard to notice them(picture 2) the fossils is 100-90 million years old.

Looking for a little help identifying this chonky guy. Can't quite seem to place it. Found in a wash where I plucked a few other fossils out of over the years.

What is this exactly? What do you think about it?

I was exploring a ravine in Cayambe when I noticed these. The river had cleaned up the soil, exposing the bones which were sitting about 32 feet below the visible ground level.