Dinosaurs A to Z
Megaraptoridae

Joaquinraptor casali

"Joaquín's thief"

Generic theropod body-plan outline
You 1.8 m (5.9 ft) tall
Joaquinraptor 7 m (23 ft) long
as long as 4 people standing fingertip to fingertip
generic theropod body plan, scaled to length — not a silhouette of Joaquinraptor
Length
7 m (23 ft)
Period
Late Cretaceous (100–66 Mya)
Place
Argentina
Food
Carnivore
Clade
Megaraptoridae
Joaquinraptor reconstruction by Connor Ashbridge
Reconstruction · Connor Ashbridge (CC-BY)

Joaquinraptor (; “Joaquín’s thief”) is an extinct genus of megaraptorid theropod dinosaurs known from the Late Cretaceous Lago Colhué Huapi Formation of Argentina. The genus contains a single species, Joaquinraptor casali, representing the youngest (most recent) definitive megaraptoran. It is known from a partially articulated, incomplete skeleton including vertebrae and bones of the skull, forelimbs and hindlimbs, and pectoral girdle, making it one of the most completely known members of the Megaraptora. It was likely at least 7 m long.

What we know

  • Named by Ibiricu et al., 2025.
  • Body length estimated at about 7 m.
  • Fossils found in Argentina.

What we guess

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