Outline: a typical sauropod
Sidersaura
"star lizard"
Type species Sidersaura marae
- Lived
- 97 to 94 million years ago, Late Cretaceous
- Diet
- Herbivore
- Group
- Sauropods, Rebbachisauridae
- Found in
- Argentina
- Named by
- Lerzo et al. 2024
Where its fossils were found
The evidence
Today
95 million years ago
Field notes
About Sidersaura
What it was like
Sidersaura was a rebbachisaur, a long-necked plant eater from a family related to Diplodocus. It is known from the bones of several animals.
It was one of the largest members of its family, and its tail bones carry star-shaped ridges, which gave it its name.
Its world
It lived in the Cretaceous in what is now Argentina. Its bones come from the Huincul Formation, where it shared the land with the giant Argentinosaurus and the hunters Mapusaurus and Meraxes.
How it was found
Lerzo and colleagues named Sidersaura in 2024.
Lived alongside
Found in the same rock formations
Close relatives
Other members of Rebbachisauridae
Sources: WikidataNamed in: L. N. Lerzo, P. A. Gallina, and J. I. Canale, A. Otero, J. L. Carballido, S. Apesteguía, P. J. Makovicky. 2024. The last of the oldies: a basal rebbachisaurid (Sauropoda, Diplodocoidea) from the early Late Cretaceous (Cenomanian–Turonian) of Patagonia, Argentina. Historical Biology