description Sinornithosaurus millenii Overview
Sinornithosaurus millenii was a small dromaeosaurid theropod from the Early Cretaceous deposits of Liaoning, China. Xu Xing and colleagues described it in 1999 from fossils preserving filamentous integument around the skeleton, making it one of the early discoveries demonstrating feather-like coverings in dromaeosaurids. Its anatomy helped document the close evolutionary relationship between non-avian theropods and birds.
insights Ranking position
Sinornithosaurus millenii ranks #95 of 249 in the Fossil ranking, behind Homo longi (Dragon Man, CAGS-HV-PA-01), ahead of Gigantopithecus blacki.
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How good is Sinornithosaurus millenii?
Sinornithosaurus millenii scores 8.20/10 (Great) on Lunoo, making it a well-rated option in the Fossil category. Early feathered dromaeosaurid with major bird-origin relevance; high scientific reputation.
What are the best alternatives to Sinornithosaurus millenii?
See our alternatives page for Sinornithosaurus millenii for a ranked list with scores. Top alternatives include: Sue (T. rex FMNH PR 2081), Stan (T. rex BHI 3033), Scotty (T. rex RSM P2523.8).
How does Sinornithosaurus millenii compare to Sue (T. rex FMNH PR 2081)?
See our detailed comparison of Sinornithosaurus millenii vs Sue (T. rex FMNH PR 2081) with scores, features, and an AI-powered verdict.
Is Sinornithosaurus millenii worth it in 2026?
With a score of 8.20/10, Sinornithosaurus millenii is highly rated in Fossil. See all Fossil ranked.
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