Dinosauria›Saurischia
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Mesetasaurus Mesetasaurus protector Soto Núñez et al. 2026
/mˌɛsɪɾɐsˈɔːɹəs/
estimated
Late Cretaceous (Campanian) · 85.7–72.2 Mya
Key Statistics
Diet
herbivore
Locomotion
quadrupedal
inferred from clade
Habitat
ground-dwelling
Social
herding
Where It Was Found
Country
Uruguay
Region
Paysandú
Formation
Guichón
Dig sites
1
distinct collections
Overview
Mesetasaurus protector is a sauropodomorph dinosaur known from the Late Cretaceous, roughly 85.7–72.2 million years ago. It was a herbivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from Paysandú, Uruguay. It was named by Soto Núñez et al. 2026. The species is represented by 1 recorded occurrence in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~5%
confidence from occurrence count
Based on 1 recorded occurrence in the Paleobiology Database.
Geologic Time
Where Mesetasaurus protector sits in deep time
Mesetasaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Mesetasaurus protector'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.