Ahvaytum bahndooiveche a:'vaytuhm

"long ago"

You 1.8 m (5.9 ft) tall
Ahvaytum 1.3 m (4.3 ft) long
2 people holding hands
Length
1.3 m (4.3 ft)
Period
Late Triassic (230 Mya)
Place
Asia · United States · Wyoming, USA
Food
Herbivore
Clade
Dinosauria

Ahvaytum ( ; “long ago”) is an extinct genus of probable basal sauropodomorph saurischian dinosaurs from the Late Triassic Popo Agie Formation of Wyoming, United States. The genus contains a single species, A. bahndooiveche, known from fragmentary hindlimb bones. Ahvaytum represents the oldest known named dinosaur of the ancient Laurasian landmass.

What we know

  • Named by Lovelace et al., 2025.
  • Body length estimated at about 1.3 m.
  • Fossils found in Asia and United States.