The North Horn Formation is a geological formation in Utah whose strata date back to the Late Cretaceous

Late Cretaceous

The Late Cretaceous is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series...

. Dinosaur remains are among the fossils that have been recovered from the formation.

Vertebrate paleofauna

Pterodactyloid tracks present at an unnamed site. The specimens are kept at the Dinosaur Tracks Museum, of the University of Colorado at Denver.

Vertebrate Vertebrate Vertebrates are animals that are members of the subphylum Vertebrata . Vertebrates are the largest group of chordates, with currently about 58,000 species described. Vertebrates include the jawless fishes, bony fishes, sharks and rays, amphibians, reptiles, mammals, and birds... s of the North Horn Formation
Genus	Species	Location	Stratigraphic position	Abundance	Notes	Images
Alamosaurus Alamosaurus Alamosaurus is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous Period of what is now North America. It was a large quadrupedal herbivore. Isolated vertebrae and limb bones indicate that it reached sizes comparable to Argentinosaurus and Puertasaurus, which would make it the...	A. sanjuanensis
Pteraichnus Pteraichnus Pteraichnus is an ichnogenus that has been attributed to pterosaurs. It has been found in, among other units, the Lower Jurassic Aztec Sandstone....		Found at an unnamed site.			Specimens kept at the Dinosaur Tracks Museum, of the University of Colorado at Denver.
Torosaurus Torosaurus Torosaurus is a genus of ceratopsid dinosaur that lived during the late Cretaceous period , between 70 and 65 million years ago. It possessed one of the largest skulls of any known land animal. The frilled skull reached in length...	T. latus
	T. utahensis
Tyrannosaurus Tyrannosaurus Tyrannosaurus meaning "tyrant," and sauros meaning "lizard") is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex , commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other...	T. rex