Mammal
Repenomamus giganticus
Repenomamus giganticusRepenomamus giganticus was a badger-sized predatory mammal that roamed the temperate forests and volcanic landscapes of Early Cretaceous China. Built with a robust skeleton, sprawling limbs, and powerful shearing jaws, it upended the traditional view that Mesozoic mammals were exclusively tiny insectivores cowering beneath dinosaurs. Fossil evidence reveals that members of this genus preyed directly upon small vertebrates, including juvenile ceratopsian dinosaurs, either through active hunting or opportunistic scavenging.
CarnivorousPrehistoric
—observations
—countries
—peak records
ExtinctConservation statusIUCN Red List categoriesLCNTVUENCREWEXExtinctRed List categories, explained →
Diet & preyPsittacosaurus lujiatunensis, Jeholosaurus shangyuanensis, Liaoningosaurus paradoxus
Predators
- Sinornithosaurus millenii
- Yutyrannus huali
- Dilong paradoxus
ThreatsVolcanic eruptions, predatory theropod dinosaurs, and environmental shifts
HabitatsTemperate forests and lakeside environments near volcanic basins
Life spanUnknown (estimated 10–20 years based on body mass)
Classification
- FamilyRepenomamidae
- SpeciesRepenomamus giganticus
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Extinct fossil species; entirely safe to study as museum specimens.
Responsible observation
- Museum Viewing: Examine articulated skeletal casts at major natural history institutes.
- Fossil Context: Look for the characteristic stout skull and robust caniniform teeth.
Image unavailablePrey 
Competitor Laikayiu / CC BY-SA 3.0 · cc-by-sa
Close Relative Morosaurus millenii / CC BY-SA 4.0 · cc-by-saClose Relative
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