Look up · dinosaur 61 of 1,425
beaked plant-eater
Altirhinus
Say it like this: “al-ti-RIEN-us”
Altirhinus kurzanovi
Altirhinus ate plants and walked on two or four legs. It lived in the Early Cretaceous. Bones have been found in Mongolia.
- When
- Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago
- Named in
- 1998 · Norman, D. B.
- Hip height
- 2.5 m · 8 ft
- Length
- 6.5–8 m · 21–26 ft
- Weight
- 1.1 tonnes
- Found in
- Mongolia · Khuren Dukh
- Food and walking
- Herbivore · Two or four legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Hadrosauroidea
The story in short
Altirhinus was formally named in 1998 by D. B. Norman. The name means “high nose.”
It lived in the Early Cretaceous (Albian), roughly 113.2 to 100.5 million years ago. Finds come from Mongolia, including the Khuren Dukh Formation. It was a herbivore and could move on two or four legs.
Published estimates put Altirhinus at a length near 6.5–8 m, hips about 2.5 m high, and a body mass around 1.1 tonnes.
On the family tree it sits in Hadrosauroidea, among the ornithopod dinosaurs.
Close relatives
Batyrosaurus
Batyrosaurus rozhdestvenskyi
Late Cretaceous (Santonian · Campanian) · roughly 85.7 to 72.2 million years ago
Bolong
Bolong yixianensis
Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago
Cariocecus
Cariocecus bocagei
Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago