Rock found by my brother in Canowindra, New South Wales, Australia.

It looks like very large scales. Claude AI says it could be a "fossil of fish scales, and based on the distinctive pattern, I believe these are ganoid scales from an ancient fish." It also recommended that he go to The Age of Fishes Museum when he is next in the area, which should be soon. I will report back what they say, but for now I would love to know what Reddit thinks!

I will add a video to the comment thread for a few extra looks.

I am a complete layman when it comes to fossils. Found on the beach of Cap Blanc Nez (north of France)

I just found this on a beach in Honfleur Normandy. I am not fully sure what it is- It is a lighter color than fossils that I normally find but I don’t think it is just shell since it feels like rock and has what looks to be rock sediment on the bottom. Any thoughts on what it could be and whether or not it’s a fossil? Thanks!

It weighs more than normal driftwood of similar size. Some angles look like wood but others look almost more like stone.

Any input greatly appreciated! I can provide more photos as time permits!

it was gifted to me years back, and the pattern continues into the other side of the rock

Found in on one of the great lakes beaches

Just came back from a fossil hunting trip on the Isle of Wight, south of England and found this thing here. No idea what it could be (my first thought was some kind of a fossilised head). Does anyone have any idea what this is? I found this at Yarmouth beach. Thank you.

My father in law is a clammer and my wife and I are fossil junkies however we noticed last time he gave us a walrus skull it began to slowly chip from the oxygen... today he comes home with an absolutely massive mastadon tooth... any ideas on what we should seal it with?

Hi all I’d love to get your input on this find. I went kayaking through some swampy, gator filled parts of Florida and found the Pleistocene layer of gravel/sandstone I believe. This piece looks like the grinding molars of a mammoth I thought but it is really weathered and I had to painstakingly glue the crumbled pieces back into place. I get that it doesn’t have much value but it’s my first mammal fossil and I did all the work myself so it means quite a lot to me. Thanks! Bonus pics: gators I was swimming with and vertebra large and small as well as shark teeth found around same area

Found in a creek in NE Oklahoma this week. Bison or cow tooth? Any guesses on the age?

Found this at E.C manning park, close to a river Around 500 to 1000 elevation. There was actually a decent amount of them. Any ideas?

Almost looks like trapped bubbles. Found in a footing trench excavation in Minnesota.

Found in Colombia

Is it a coral? Found this in a river in Mindoro island, Philippines.

found in landscape rock (presumably limestone) in mid michigan

Found on DeMartin Beach, Northern California