J433 - Large Edmontosaurus Hadrosaurid "duck-billed" Ornithopod Dinosaur Tooth - Hell Creek Fm

Edmontosaurus fossils are abundant in the Hell Creek Formation (FM), representing two species, E. regalis and the later E. annectens, both large, common duckbilled dinosaurs from the Late Cretaceous, with finds including skin impressions (mummies), bones, and teeth, indicating they were significant herbivores in the region's diverse ecosystem just before the K-Pg extinction event. 

Key Facts about Edmontosaurus in Hell Creek:
Species Present: Both E. regalis and E. annectens are found, with regalis in older swampy layers and annectens in later forested environments.
Commonality: Edmontosaurus was a very successful herbivore, often considered the largest dinosaur in the Hell Creek ecosystem besides T. rex.
Fossil Finds: The formation yields many fossils, from fragments to exceptionally preserved "mummies" showing skin impressions (like the famous AMNH 5060).
Habitat & Diet: They lived in lush, riverine environments, feeding on ferns, conifers, and aquatic plants, using their beak to snip and cheek teeth to grind tough vegetation.
Significance: They were a crucial part of the Late Cretaceous fauna, providing food for predators and contributing to the rich fossil record of the Hell Creek (and Lance) formations. 
In short, Edmontosaurus fossils are a hallmark of the Hell Creek Formation, showcasing a dominant plant-eating dinosaur from North America's final dinosaur age. 

This tooth does not have any type of restoration or repair. It shows some feeding wear. Quite large size.