Here are some shark teeth my son and I found about 4 years ago at an abandoned sand pit near Goldsboro.

No, I found the shark teeth at an old abandoned sand pit off 111 South near the Neuse River.  The coated fossils were found in some dirt piles off of Salem Church Rd. that had been dumped there...it appears it came from the river somewhere.

That's some good stuff y'all are finding down there, BP.
And it sounds like you're having a good time doing it!
Thanks for keeping us posted.
Ya know the Amber down there is found in, or just below, areas that the black wood covered with marcasite is found.
REAL rare stuff to find, but you never know.

BP, did you see the "What in the World" thread I started up in the Identifying Your Specimen section? Check it out. 

I just checked out the site you listed.  Strange growth on that piece!  By the way, do you have any pictures of what amber would look like when you are hunting the river?  And what is this lignite I hear so much about?  Is that a marker to where you can find amber?  Thanks, I have much to learn.  BP

Great job guys! You're going to have more pet wood in your yard than real wood pretty soon.
The pyrite you are finding is a form called "marcasite". The marcasite fills voids in the wood so that is why it commonly has the shape of limbs, etc.
But it is not actually wood that has turned to pyrite, it is just taking the shape of what it replaces.
I gave you a link for lignite above on one of your other posts, and yes, the lignite is a "marker" for the amber.
I have heard that the amber can be found in pockets in the lignite, but I have never found any.
And the one time I visited the Cut with someone that knew how to find the amber, he said it was in material just below the lignite layer.
Which really means you are looking in the floor/bed of the Cut, so the water level has to be low.
The water was up that day, so we did not find any.

Happy hunting, guys, and thanks for keeping us posted and all the pics.
By the way, that last round piece you pictured is a really cool find. That's a keeper just like it is.
Also, the lignite is going to fall apart as it drys out. Check it for amber and cool marcasite pieces.
Maybe Victor will get on here and share some of his knowledge about the amber.