El Gallo Formation

The El Gallo Formation is a geological formation in Mexico whose strata date back to the Late Cretaceous, from the Santonian to the Maastrichtian. Dinosaur remains are among the fossils that have been recovered from the formation.

Dinosaurs
Indeterminate theropod, coelurosaur, dromaeosaurid, tyrannosaurid, hadrosaurid, and ankylosaurid remains are known from the formation. Dinosaur eggs are known from the formation. Alexornis antecedens actually comes from the La Bocana Roja Formation. An indeterminate hadrosaurine is known from the formation.

Amphibians
An indeterminate albanerpetontid is known from the formation.