Sinosauropteryx was the first non-avian dinosaur found with fossilized proto-feathers (filamentous structures, not flight feathers); Archaeopteryx had fully developed flight feathers.
Sinosauropteryx (1 m, ~0.6 kg) was smaller than Archaeopteryx (0.5 m, ~0.5 kg) in body mass terms though similar in length.
Sinosauropteryx lived in Early Cretaceous China; Archaeopteryx in Late Jurassic Germany.
Sinosauropteryx's reddish-brown and white striped tail pattern is reconstructed from fossilized melanosomes โ one of the first dinosaurs with known coloration.
Archaeopteryx could likely fly or glide; Sinosauropteryx was a fast, ground-running insectivore with no flight capability.
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Did You Know? fun facts
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Did You Know?
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Sinosauropteryx was about 2.0x longer than Archaeopteryx.
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Both Archaeopteryx and Sinosauropteryx were carnivores.
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Archaeopteryx lived during the Jurassic Late while Sinosauropteryx lived during the Cretaceous Early, separated by roughly 0 million years.
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Archaeopteryx was discovered 135 years earlier, in 1861.
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Both belong to the Theropoda clade, making them relatively close relatives.
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