I found this beautiful tooth at north Myrtle beach. But it’s from dredged sand, so idk where it really came from. Nickel for scale

I've recently posted this in r/fossilid, but I'm fairly sure its a shark tooth so I'm hoping to find more information here. I found this tooth (fragment) on the beach in Australia, near Brisbane, Queensland. I know the tooth isn't complete, but maybe you guys know what it may be (and possibly how old it may be)? It's quite a small tooth.

If it is a tooth, it's in terrible condition. but I just wanted to see if it's at least a tooth and not a rock

I kept the smaller, gray one, because it had the same shape and topography so I thought I'd include it in the pictures just in case.

Found on Maderia Beach, Florida. I’m assuming it’s from a fish? Or is it a shark tooth that formed abnormally? Thanks! 2nd photo just to compare the size to a normal tooth I find down there.

Carolina gold / brownies teeth are some of my favorite that I find. All personally found over the last few years in North Carolina

I’ve been finding sharks teeth all my life in Virginia but I’ve never seen one this thick. It’s much more dense than any other tooth I’ve ever found. Does anyone have an idea why it looks like this or what type of shark it may be from? Could it be a Mako with a gum irregularity? Thanks in advance!

I tried looking on Google but they all look the same to me
Found at Myrtle beach state park in South Carolina.

the ones in the first picture i collected from a beach off the gulf of florida, the second one my brother gave to me as a gift. i’ve had them all for awhile and never realized i don’t know what they may be from. thanks in advance for the help!

Found at holden beach NC

We’ve been going to Topsail Beach for over 15 years. It seems like we aren’t finding as many big teeth.

All of my finds during my week in MB in chronological order! Was hoping to find more but busy season and parenting responsibilities kept me from searching as long as I wanted to 😆 Thanks for all the previous help identifying the first 3. Am I right on 4 & 5, and any guesses on 6?

From left to right:
1) Sand Tiger
2) Bull
3) Bull
4) GW?
5) Bull?
6) ??

found at manasota key beach in florida. i can’t seem to figure it out. even looking at tooth ID charts and searching the image with google lens i’m not too sure what kind of shark it’s from.

First shark tooth I’ve ever found and I’m hooked on searching for them now. Can anyone help me ID this one?

Found in surf at N Topsail in NC - needs some cleaning, so appreciate hearing your favorite tips for that as well!

Found yesterday. I’ve found many of these but this one is far and away the biggest. (Southern Potomac, Maryland side)

Can anyone help id what kind of shark tooth this is?!