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dinosaurs

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Artist’s conception of a large carnivorous dinosaur skull and the skeleton of a much smaller theropod staring at each other.
dinosaurs

Dinosaur Bone Study Reveals That Not All Giants Grew Alike

By Anna Gibbs
March 20, 2023
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A survey of prehistoric bones reveals that T. rex and some of its cousins had more than one way to reach enormous sizes. Evolution may have preserved that variation in modern animals too.

Paleontologist Pincelli Hull
Q&A

A Rapid End Strikes the Dinosaur Extinction Debate

By Joshua Sokol
March 25, 2020
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The paleontologist Pincelli Hull has nailed down the timing and speed of the extinction that killed off the dinosaurs — details that carry ominous warnings for today.

Abstractions blog

Complex Animals Led to More Oxygen, Says Maverick Theory

By Jordana Cepelewicz
March 21, 2018
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For decades, researchers have commonly assumed that higher oxygen levels led to the sudden diversification of animal life 540 million years ago. But one iconoclast argues the opposite: that new animal behaviors raised oxygen levels and remade the environment.

evolution

How Dinosaurs Shrank and Became Birds

By Emily Singer
June 2, 2015
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Modern birds emerged in a snap of evolutionary time through a series of simple genetic changes.

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