This is a .58" fossil crocodile (Goniopholis) tooth from the Late Cretaceous, Aguja Formation of Texas. It is in good condition and still attached to the rock it was found in.
Goniopholis is an extinct genus of crocodile know primarily from Europe and Africa. It has recently been identified in late Jurassic and early Cretaceous deposits in North America.
This specimen was collected within the past year on private deeded property in Brewster County, Texas. You won't see any other dinosaur material from the Aguja & Javelina Formations for sale because nearly all of the formation lies within the boundaries of a national park or in Mexico which can not be collected. One of our partners was lucky enough to purchase several hundred acres of ranch land in Texas containing a good exposure of these formations and we will be offering more material from the locality in the future.