# Stygimoloch (*Stygimoloch spinifer*)

Stygimoloch was a prehistoric dinosaur known for its distinctive features. Scientists study its bones to learn about how dinosaurs lived.

- **Category:** [Ancient](https://www.snappit.app/explore/categories/ancient)
- **Rarity:** Common
- **Danger:** 1/5 · Very low
- **Habitat:** Mesozoic forests and floodplains

![Stygimoloch](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Stygimoloch_spinifer.jpg&width=800)

Photo: User:Haplochromis, CC BY-SA 3.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Stygimoloch_spinifer.jpg)

## Appearance

The Stygimoloch has a thick, dome-shaped skull ringed with sharp spikes and two large horns above its eyes. Its body was likely covered in earthy green or brown scales, providing camouflage in ancient forests.

## Taxonomy

- **Kingdom:** Animalia

## Interesting facts

- Despite its fierce look, Stygimoloch probably only ate plants and leaves!
- Its name means 'Styx demon' from the mythical river and its spiky head!
- Its skull was ten times thicker than ours, a built-in crash helmet!
- Scientists debate if it's a Pachycephalosaurus juvenile!

## Special abilities

- **Skull Helmet Power:** Stygimoloch can deliver powerful head-butts because of its incredibly thick, domed skull, which helps them defend against predators.
- **Spiky Shield:** Stygimoloch has sharp, spiky horns and bony knobs on its head that help them deter attackers by making them look intimidating.
- **Display Signal:** Stygimoloch could use its unique head ornamentation for display, helping them recognize others of their kind or attract a mate.

## Measurements & details

- **Length:** 2.5-3.5 m
- **Weight:** 60-80 kg
- **Era:** Mesozoic (Late Cretaceous)
- **Extinct Millions Years Ago:** 66

## Diet & Feeding

A plant-eater that munched on leaves and low-growing vegetation in its forest home.

- **Primary Foods:** Leaves, Ferns, Shrubs, Roots, Fruits
- **Foraging Method:** Foraging

## Ecological connections

- **Eaten by:** Tyrannosaurus (*Tyrannosaurus rex*) — King of the dinosaurs that likely preyed on Stygimoloch.
- **Eaten by:** Dakotaraptor (*Dakotaraptor steini*) — A large raptor that hunted young or sick Stygimoloch.
- **Eats:** Magnolia tree (*Magnolia portezueloensis*) — Stygimoloch foraged on leaves and shoots of flowering plants.

## Traits

- [Ancient](https://www.snappit.app/explore/traits/ancient): Ancient refers to organisms, objects, or geological formations that have existed for an extremely long period.
- [Artifact](https://www.snappit.app/explore/traits/artifact): An artifact is an object made or modified by human culture, typically of historical or archaeological interest.
- [Spiky/Thorny](https://www.snappit.app/explore/traits/spiky-thorny): Possessing sharp, pointed projections or spines on the body or surface.
- [Fossil](https://www.snappit.app/explore/traits/fossil): A fossil is the preserved remains or traces of an ancient organism embedded in rock or other geological deposits.

## Collections

- [Ancient](https://www.snappit.app/explore/collections/ancient)

## Safety

**Danger:** 1/5 · Very low

While extremely dangerous in their time, this creature is now extinct.

## Frequently Asked Questions

### How to identify Stygimoloch?

Compare skull shape, horns, plates, limbs, posture and tail. Museum models and toys can mix features or follow outdated reconstructions. Dinosaur Identifier: upload a photo and compare the visible details.

### How long is Stygimoloch?

2.5-3.5 m

### How much does Stygimoloch weigh?

60-80 kg

### What does Stygimoloch eat?

A plant-eater that munched on leaves and low-growing vegetation in its forest home.

### Where is Stygimoloch usually found?

Mesozoic forests and floodplains

### How does Stygimoloch hunt?

Foraging

### What geologic era did Stygimoloch live in?

Mesozoic (Late Cretaceous)

### When did Stygimoloch go extinct?

66

## More Ancient

- [Tyrannosaurus rex](https://www.snappit.app/explore/tyrannosaurus-rex) (*Tyrannosaurus rex*)
- [Triceratops](https://www.snappit.app/explore/triceratops) (*Triceratops horridus*)
- [Stegosaurus](https://www.snappit.app/explore/stegosaurus) (*Stegosaurus stenops*)
- [Brachiosaurus](https://www.snappit.app/explore/brachiosaurus) (*Brachiosaurus altithorax*)

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Source: [Stygimoloch: Facts & Places to See — Snappit](https://www.snappit.app/explore/stygimoloch)