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Jian Jian changmaensis Zhou et al. 2026
/dʒjɛn/
Early Cretaceous (Aptian) · 121.4–113.2 Mya
Key Statistics
Diet
carnivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Where It Was Found
Country
China
Region
Gansu
Formation
Xiagou
Dig sites
1
distinct collections
Overview
Jian changmaensis is a theropod dinosaur known from the Early Cretaceous, roughly 121.4–113.2 million years ago. It was a carnivore. It is recorded as ground-dwelling. Fossils have been recovered from Gansu, China. It was named by Zhou 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 Jian changmaensis sits in deep time
Jian
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Jian changmaensis'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.