Pretty worn; @matthew-gramling knows about teeth

Looks either like a fish tooth or a coprolite

What kind of fish?

Ichyrhiza mira late Cretaceous sawfish rostral tooth

@matthew-gramling could help

Where?

these are probably from a type of horse.

Greetings @a-trilobite and @ethan-wiggins-2 ! I would have to agree with @leonardo-miranda that these are likely horse teeth or those of a similar ungulate.

Part of an ammonite. Where was this found? I’m guessing somewhere in Texas?

Yes Texas

Please update the data fields to the extent possible e.g. . classification, locality, etc. Even if you don’t know the geological context, you can fill out where it was found and the notes on who, when found it.

This is a piece of amonite

The twisted part is a gastropod, the rest is the rock it’s attached to

@a-trilobite I think the entire thing is part of the gastropod; the large part of the back is just the biggest whorl.

@leonardo-miranda I don’t know… that’s a little bit of a leap in size from one to the other. I’m going to sick with what I said before about it, but ask @ethan-wiggins-2 for some extra photos and angles

I’ll post more

@ethan-wiggins-2 can you post some more photos?

Sea urchins (echnoids)

Agree

Looks like a sponge instead of skin, @matthew-gramling could help

it might possibly be the bark of a Carboniferous tree.

It could also possibly be Mastopora Fava or some other form of fossilized algae.

could be a concretion

Does anyone know what they could be?

Looks like an oyster cast with a bit of the original shell material still on it.

Thanks bill I appreciate it

@bill-heim, he knows everything about shark teeth

Again from where?

mako??

@bill-heim to the rescue

From where?