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beaked plant-eater
Cionodon
Say it like this: “sy-ON-oh-don”
Cionodon arctatus
Cionodon ate plants and walked on two or four legs. It lived in the Late Cretaceous. Bones have been found in the United States.
- When
- Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
- Named in
- 1874 · Cope, E. D.
- Hip height
- Not established
- Length
- Not established
- Weight
- Not established
- Found in
- the United States
- Food and walking
- Herbivore · Two or four legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Hadrosauridae
The story in short
The genus Cionodon dates to 1874, the year E. D. Cope described it.
It lived in the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from the United States. It was a herbivore and could move on two or four legs.
The fossils of Cionodon are too incomplete for a responsible length, hip height, or weight, so those fields are left blank on purpose.
On the family tree it sits in Hadrosauridae, among the ornithopod dinosaurs.
Close relatives
Aquilarhinus
Aquilarhinus palimentus
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Arstanosaurus
Arstanosaurus akkurganensis
Late Cretaceous (Santonian · Campanian) · roughly 85.7 to 72.2 million years ago
Barsboldia
Barsboldia sicinskii
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago