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Life

Frozen squirrel scat preserves ancient DNA from hundreds of species

A complex ecosystem of woolly mammoths, bison, horses and big cats has been elucidated by studying the faeces of small rodents that probably ate the bigger animals

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Earth

Dinosaur-killing asteroid impact site stayed hot for millions of years

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Tyrannosaurus rex dinosaur, illustration

Life

We may finally know why dinosaurs like T. rex evolved tiny arms

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Life

Extinct relative of koalas discovered in Western Australia

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Why birds are the only surviving dinosaurs

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Why birds are the only surviving dinosaurs

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A sketch of the giant octopus

Life

Largest-ever octopus was great white shark of invertebrate predators

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An ancient radiolarian

Life

Hidden fossils reveal secrets of oceans before major mass extinction

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Life

Surprise fossil discoveries push back the evolution of complex animals

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Life

Fossils discovered in Egypt may be the closest ancestor of all apes

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Life

Ancient 'weirdo' reptile graduated from 4 legs to 2 in adolescence

Sonselasuchus cedrus, discovered in fossils from Arizona, was a crocodile relative from the Triassic period that grew into an ostrich-like adult

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Life

Top predators still prowled the seas after the biggest mass extinction

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Life

Tiny predatory dinosaur weighed less than a chicken

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Life

New fossils may settle debate over mysterious sail-backed spinosaurs

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Life

Huge fossil bonanza preserves 512-million-year-old ecosystem

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