Science

What a 99-million-year-old feather is telling us about the evolution of flight

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Briefings

A 99-million-year-old feather preserved in amber provides new insights into dinosaur flight evolution. The fossil, dated to the Late Cretaceous period, represents the longest feather ever discovered, offering physical evidence of early avian plumage structures. This discovery helps bridge the gap between non-avian dinosaurs and modern birds, though the exact mechanism of feather development remains partially unexplained.

Key points

• The fossil is a 99-million-year-old feather preserved in amber from the Late Cretaceous period.
• It represents the longest feather ever discovered, providing physical evidence of early avian plumage.

Context

Dinosaurs were already sporting feathers before birds evolved, but the precise evolutionary pathway remains unclear. This amber fossil offers a tangible link between ancient reptiles and modern avian flight capabilities.

Limitations

The fossil's exact origin and precise dating are uncertain. The fossil is not a complete feather, and the specific evolutionary mechanism for its formation remains unexplained.

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