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beaked plant-eater
Probactrosaurus
Say it like this: “proh-BAK-tro-SAWR-us”
Probactrosaurus gobiensis
Probactrosaurus ate plants and walked on two or four legs. It lived in the Early Cretaceous. Bones have been found in China.
- When
- Early Cretaceous (Aptian · Albian) · roughly 121.4 to 100.5 million years ago
- Named in
- 1966 · Rozhdestvensky, A. K.
- Hip height
- 1.7 m · 6 ft
- Length
- 5.5 m · 18 ft
- Weight
- 1 tonnes
- Found in
- China · Miaogou
- Food and walking
- Herbivore · Two or four legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Hadrosauroidea
The story in short
In 1966, A. K. Rozhdestvensky published the name Probactrosaurus. The name means “before Bactrosaurus.”
It lived in the Early Cretaceous (Aptian · Albian), roughly 121.4 to 100.5 million years ago. Finds come from China, including the Miaogou Formation. It was a herbivore and could move on two or four legs.
Published estimates put Probactrosaurus at a length near 5.5 m, hips about 1.7 m high, and a body mass around 1 tonnes.
On the family tree it sits in Hadrosauroidea, among the ornithopod dinosaurs.
Close relatives
Altirhinus
Altirhinus kurzanovi
Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago
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