Image by PaleoNeolitic · CC BY 4.0 · View on Wikimedia Commons

Duonychus

Herbivore

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 Duonychus (Baynshire), so they lived in the same region at roughly the same time.

Gobihadros

Talarurus

Erketu

Khankhuuluu

Tsagantegia

Achillobator

Amtocephale

Enigmosaurus

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: Therizinosauridae
When it lived: 83.6–100.5 million years ago
Geologic stages: Cenomanian – Santonian
Named by: Kobayashi et al., 2025
Fossil occurrences: 1 sites

Countries with fossils

Mongolia

Data from Paleobiology Database and Wikidata