Why Dinosaurs Like T. Rex Evolved Tiny Little Arms

New dinosaur Meraxes, named after ‘Game of Thrones’ dragon, sheds light on convergent evolution of huge skulls and dinky little arms in rex-alikes from completely different families

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Artist's reconstruction of Meraxes gigas and its twee arms
Artist's reconstruction of Meraxes gigas and its twee armsCredit: CARLOS PAPOLIO, Reuters
Ruth Schuster
Ruth Schuster
Paleontologist Peter Makovicky with Meraxes leg, in situCredit: AKIKO SHINYA/רויטרס
A replica of the fossil of a Meraxes gigas, a newly discovered giant carnivorous dinosaur.Credit: LUIS ROBAYO/AFP

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