Here is a nice example from the huge Cretaceous crocodile, Deinosuchus. There is also an unidentified bone in the matrix.

Most of the Aguja formation is on national park land or not accessible to the public, making them uncommon in the marketplace. These were collected from a private ranch during the digging season last year.

The tooth measures, 1.06" on matrix measuring 4" x 2.5".