Species
Sinornithosaurus millenii
Sinornithosaurus milleniiSinornithosaurus millenii stalked the dense, lakeside forests of the Early Cretaceous, brandishing sharp sickle claws and filamentous plumage that covered its body and arms. Its slender snout housed uniquely grooved teeth once debated as a venom-delivery system, though paleontologists primarily view them as tools for subduing struggling lizards and early mammals. Flexible wrist joints allowed these small predators to tuck their feathered forelimbs tightly against the torso when navigating tangled underbrush.
FeatheredCarnivorePrehistoric
—observations
—countries
—peak records
ExtinctConservation statusIUCN Red List categoriesLCNTVUENCREWEXExtinctRed List categories, explained →
Diet & preyEomaia scansoria, Jeholbaatar kielanae, Dalinghosaurus longidigitus
Predators
- Sinocalliopteryx gigas
- Dilong paradoxus
ThreatsLarger predatory theropods, volcanic ash eruptions
HabitatsCretaceous temperate forests and lacustrine woodlands
Life span10–18 years (estimated)
Classification
- FamilyDromaeosauridae
- SpeciesSinornithosaurus millenii
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Extinct species; safe to study in fossil displays and museum collections.
Responsible observation
- Fossil Identification: Look for preserved feather halos and grooved teeth in Jehol shale slabs.
- Museum Etiquette: View delicate holotype slabs behind glass displays without tapping or using flash.
Predator Lida Xing, Phil R. Bell, W. Scott Persons IV, Shuan Ji, Tetsuto Miyashita, Michael E. Burns, Qiang Ji, Philip J. Currie / CC BY 2.5 · cc-by
Coexisting Neighbor (c) Art by Velizar Simeonovski. Published by Quanguo Li, Julia A. Clarke, Ke-Qin Gao, Jennifer A. Peteya, Matthew D. Shawkey, some rights reserved (CC BY) · cc-by
Close Relative David W. E. Hone, Helmut Tischlinger, Xing Xu, Fucheng Zhang / CC BY 2.5 · cc-by
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