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Trierarchuncus
Carnivore
There is no write-up for this dinosaur yet, but the scientific data below is complete.
Who lived alongside it
Dinosaurs found in the same rock formation as Trierarchuncus (Hell Creek), so they lived in the same region at roughly the same time.
Anzu
Cretaceous
Avisaurus
Cretaceous
Dakotaraptor
Cretaceous
Eoneophron
Cretaceous
Platytholus
Cretaceous
Nanotyrannus
Cretaceous
Acheroraptor
Cretaceous
Triceratops
Cretaceous
Formation data from the Paleobiology Database, counting only each genus's main formations. One formation can span hundreds of thousands to millions of years, so this doesn't mean any two of them ever met.
Scientific details
- Classification
- Theropod (two-legged predators)
- Family
- Alvarezsauridae
- When it lived
- 66–72.2 million years ago
- Geologic stages
- Maastrichtian
- Named by
- Fowler et al., 2020
- Fossil occurrences
- 6 sites
Countries with fossils
- United States
Data from Paleobiology Database and Wikidata