r/fossils

The hole goes halfway through. It gets smaller as it goes almost a pinpoint. It’s very heavy 3 inches long 3 inches wide 3 inches diameter.

Hi everyone, found these in a Alvar in central Ontario. They were all directly on the exposed stone, so not a paved surface. The first two pictures are the "primary one" but there were many that looked like it. Some others beside were more weathered/cropped to the surface. All the had the same "ribbed" look.

I have a hard time believing these are exposed fossils but what do I know! If they are, what type(s) and age do you think they might be?

Thank you!

I bought this from Fossil Era. The trilobite itself is around 1.5 inches long. Here's a paper that goes into more details about red trilobites if anyone is curious

https://www.app.pan.pl/archive/published/app54/app54-117.pdf

Knightia eocaena fossil (50-52 mya) recovered from the Green River Formation near Kemmerer, Wyoming, USA, on 9/12/2026.

Diplomystus dentatus fossil (50-52 mya) recovered from the Green River Formation near Kemmerer, Wyoming, USA, on 9/12/2026.

Including ones I can see under the rock, I believe there are around 50 trilobites concentrated in about 5 square inches of rock. I'm waiting to prep it until I can find some good sandblasting equipment, since I'm tired of scratching fossils with dremmel attachments.

Hello! I found this bone about 20 years ago here in Florida. I found it in salt/brackish water. I've always wondered. It looks broken obviously, so I'm not quite sure what it even is.

found this in our front garden, embedded with a bunch of seashell like patterns

Lastly I posted that weird shell-like rainbow fossils. While cracking some stones today(also ordovicisn silurian I guess) I found this peculiar speciment. Its pretty small - about 7mm(photos are 1x, 10x and 40x magnification) I think its kinda look like bryzoan or tabulate coral, but 1. Its look nothing like bryzoans found along in these rock 2. Its really, really thin, and thats not how coral and bryzoans often preserve(but it could be an imprint). It kinda reminds me of scale-like texture, but its highly impropable to turns out to be true. Do you have any idea what this is?

Ps. Last three photos are bryzoan from my collection for reference.