
Image by No machine-readable author provided. Deivid assumed (based on copyright claims). · CC BY-SA 3.0 · View on Wikimedia Commons
Riojasaurus
Unknown diet
📐 Compare its size with other dinosaurs →
There is no write-up for this dinosaur yet, but the scientific data below is complete.
Who lived alongside it
Dinosaurs found in the same rock formation as Riojasaurus (Los Colorados), so they lived in the same region at roughly the same time.

Coloradisaurus
Triassic
Herbivore
Lessemsaurus
Triassic

Powellvenator
Triassic

Zupaysaurus
Triassic
Formation data from the Paleobiology Database, counting only each genus's main formations. One formation can span hundreds of thousands to millions of years, so this doesn't mean any two of them ever met.
Scientific details
- Classification
- Sauropodomorph (long-necked)
- Family
- Riojasauridae
- When it lived
- 205.7–227.3 million years ago
- Geologic stages
- Norian
- Named by
- Bonaparte, 1969
- Fossil occurrences
- 2 sites
Countries with fossils
- Argentina
Data from Paleobiology Database and Wikidata