Report on two dinosaurs found in China, bridging 90M year evolutionary gap between early Alvarezsaur finds (3 major claws), new find (one major, 2 minor claws), later finds (one major, 2 tiny claws) - confirming the steady evolutionary reduction of claws between early and later fossil record

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Report on two dinosaurs found in China, bridging 90M year evolutionary gap between early Alvarezsaur finds (3 major claws), new find (one major, 2 minor claws), later finds (one major, 2 tiny claws) - confirming the steady evolutionary reduction of claws between early and later fossil record