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Huallasaurus Huallasaurus australis (Bonaparte et al. 1984)
/hjˌuːɐlɐsˈɔːɹəs/
estimated
Late Cretaceous (Maastrichtian) · 83.6–66 Mya
Key Statistics
Diet
herbivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Social
herding
Where It Was Found
Country
Argentina
Region
Río Negro
Formation
Los Alamitos
Dig sites
2
distinct collections
Overview
Huallasaurus australis is an ornithopod dinosaur known from the Late Cretaceous, roughly 83.6–66.0 million years ago. It was a herbivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from Río Negro, Argentina. It was named by (Bonaparte et al. 1984). The species is represented by 2 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~8%
confidence from occurrence count
Based on 2 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Huallasaurus australis sits in deep time
Huallasaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Huallasaurus australis's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology. Predator–prey pairs additionally have to have been dug up in the same place.