Aside from Pachycephalosaurus itself, two other pachycephalosaurs were described from the latest Cretaceous of the northwestern United States: Stygimoloch spinifer ("thorny Moloch of …

Stygimoloch ("demon from the river Styx") is a dubious genus of the pachycephalosaur family living in the Late Cretaceous period. It was distinguished from other pachycephalosaurs by the …

Jul 23, 2023 · The Stygimoloch was a unique dinosaur from the Late Cretaceous period. Discover its origins, key facts, and the environment it thrived in.

Explore Stygimoloch, a plant-eating pachycephalosaur dinosaur in the Dino Directory.

Nov 20, 2025 · Stygimoloch inhabited North America during the very end of the Cretaceous period, approximately 66-68 million years ago, just before the mass extinction event that wiped …

Dec 10, 2023 · The Stygimoloch, a dinosaur whose name translates to “the demon from the Styx,” was a fascinating creature that roamed the Earth during the Late Cretaceous period.

Aug 29, 2025 · The dinosaur known as Stygimoloch was first described in 1983 from fossil remains discovered in the Hell Creek Formation of Montana, a geological area renowned for …

Stygimoloch is a dubious genus of herbivorous dinosaur. It is known from fossil remains dating to the late Cretaceous period, about 70 million to 66 million years ago.

Mar 7, 2019 · Discover an in-depth profile of Stygimoloch that includes this dinosaur's characteristics, behavior, and habitat.

Oct 21, 2024 · When the Museum of Life and Science’s Dinosaur Trail opened in 2009, Stygimoloch was one of several species of pachycephalosaurids (dome-skulled dinosaurs). …