Guaibasaurus

Generic theropod body-plan outline
You 1.8 m (5.9 ft) tall
Guaibasaurus 5 m (16.4 ft) long
as long as 3 people standing fingertip to fingertip
generic theropod body plan, scaled to length — not a silhouette of Guaibasaurus
Length
5 m (16.4 ft)
Period
Late Triassic (225.42 Mya)
Place
Brazil · China · India
Food
Carnivore
Clade
Guaibasauridae

Guaibasaurus is an extinct genus of basal saurischian dinosaur known from the Late Triassic Caturrita Formation of Rio Grande do Sul, southern Brazil. Most analyses recover it as a sauropodomorph, although there are some suggestions that it was a theropod instead. In 2016 Gregory S. Paul estimated it at around 2 meters long (6.6 ft) and 10 kg (22 lbs), whereas in 2020 Molina-Pérez and Larramendi listed it at 3 meters (10 ft) and 35 kg (77 lbs).

What we know

  • Named by Bonaparte et al., 1999.
  • Fossils found in Brazil and China.

What we guess

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