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plated dinosaur
Mongolostegus
Say it like this: “mon-GO-lo-STEG-us”
Mongolostegus exspectabilis
Mongolostegus ate plants and walked on four legs. It lived in the Early Cretaceous. Bones have been found in Mongolia.
- When
- Early Cretaceous (Aptian · Albian) · roughly 121.4 to 100.5 million years ago
- Named in
- 2018 · Tumanova, T. A.; Alifanov, V. R.
- Hip height
- 1.8 m · 6 ft
- Length
- 6 m · 20 ft
- Weight
- 1.4 tonnes
- Found in
- Mongolia · Zuunbayan
- Food and walking
- Herbivore · Four legs
- Kind
- plated dinosaur · Stegosaur
- Family branch
- Stegosauria
The story in short
The genus Mongolostegus dates to 2018, the year T. A. Tumanova and V. R. Alifanov described it. The name means “mongolian roof.”
Fossils referred to Mongolostegus date to the Early Cretaceous (Aptian · Albian), roughly 121.4 to 100.5 million years ago. Finds come from Mongolia, including the Zuunbayan Formation. It was a herbivore and walked on four legs.
Published estimates put Mongolostegus at a length near 6 m, hips about 1.8 m high, and a body mass around 1.4 tonnes.
On the family tree it sits in Stegosauria, among the plated dinosaurs.
Close relatives
Amargastegos
Amargastegos brevicollus
Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago
Baiyinosaurus
Baiyinosaurus baojiensis
Middle Jurassic (Bathonian) · roughly 168.2 to 165.3 million years ago
Bashanosaurus
Bashanosaurus primitivus
Middle Jurassic · Late Jurassic (Bajocian–Oxfordian) · roughly 170.9 to 154.8 million years ago