The fossils were discovered in the Western Mississippi Embayment, a basin extending from southern Illinois to northern Louisiana. This area, now dry land, was submerged under an ocean during the Cretaceous period, making such finds in this region particularly rare.

Rare fossils of the mosasaur Globidens alabamaensis — a 20 foot predator with strange, mushroom-shaped teeth — unearthed in northeastern Texas.

Discovery of rare fossil fragments in Texas In 2023, a private fossil hunter uncovered two jaw fragments belonging to Globidens alabamaensis in northeastern Texas, specifically in the Ozan Formation.