Dinosauria › Reptilia › Theropoda › Therizinosauridae
Duonychus
Duonychus tsogtbaatari Kobayashi et al. 2025
Late Cretaceous (Santonian) · 100.5–83.6 Mya
Key Statistics
Diet
herbivore
Locomotion
bipedal
inferred from clade
Overview
Duonychus tsogtbaatari is a theropod dinosaur known from the Late Cretaceous, roughly 100.5–83.6 million years ago. It was a herbivore. It was named by Kobayashi et al. 2025. 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%
fragmentary record
Confirmed
Inferred
Based on 1 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Duonychus sits in deep time
Duonychus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Duonychus's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology.