Dinosaurs A to Z
Rebbachisauridae

Sidersaura marae

"star lizard"

Generic sauropod body-plan outline
You 1.8 m (5.9 ft) tall
Sidersaura 1.1 m (3.7 ft) long
as long as 2 people standing fingertip to fingertip
generic sauropod body plan, scaled to length — not a silhouette of Sidersaura
Length
1.1 m (3.7 ft)
Period
Late Cretaceous (96–93 Mya)
Place
Argentina
Food
Herbivore
Clade
Rebbachisauridae
Sidersaura reconstruction by TotalDino
Reconstruction · TotalDino (CC0)

Sidersaura (meaning “star lizard”) is an extinct monotypic genus of rebbachisaurid sauropod dinosaur from the Late Cretaceous Huincul Formation of Argentina. The genus contains a single species, S. marae, known from the remains of four individuals. Sidersaura represents one of the largest known rebbachisaurids.

What we know

  • Named by Lerzo et al., 2024.
  • Body length estimated at about 1.13 m.
  • Fossils found in Argentina.

What we guess

The reconstruction notes for Sidersaura — soft tissue, color, behavior — haven't been written up yet. Only the recorded basics above are filled in so far.