Tiny, long-armed dinosaur leads to rethink of dinosaur miniaturization

Ars Technica
By Jacek KrywkoMar 8, 2026, 7:30 am107 pts
Alvarezsaurids were mostly small-bodied theropods that paleontologists originally misinterpreted as early flightless birds, only to later recognize them as an ant-eating lineage of non-avian dinosaurs. For years, we suspected that Alvarezsaurids underwent a rare process of evolutionary miniaturization directly…

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