GoKawiilNew Jurassic fossil shows flightless bird-like dinosaur among earliest avialans
Researchers have described a newly identified Jurassic-age avialan that appears to have been flightless, adding to the fossil record of early bird-line dinosaurs from China's Yanliao and Jehol biotas. The find joins other recent discoveries, such as short-tailed and bony-tailed avialans, that document a wider range of body plans among the earliest relatives of birds than previously documented.
GoKawiil's interpretation of the reporting above, not reported fact.
The discovery suggests that the avialan lineage experimented with diverse ecological strategies, including loss of flight, much earlier than previously assumed, which could reshape timelines for when and how powered flight evolved among bird ancestors. Because the evidence comes from a cluster of related Jurassic fossil finds, researchers may use it to argue that avian ecological diversification began well before the classic Archaeopteryx-era view of bird origins.
- A newly described Jurassic fossil indicates a flightless member of the avialan lineage existed early in bird evolution.
- The find adds to a growing set of Yanliao and Jehol Biota fossils that reveal varied body plans among early bird relatives.
- It suggests ecological diversification among avialans began earlier than previously understood, potentially predating or coinciding with Archaeopteryx.
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See National Geographic Dinosaur Encyclopedia on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: nature.com — Xu, 2026-10-14
Published there as: “Jurassic flightless bird reveals early ecological diversity of avialans”
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