Palaeontology is the study of organisms that lived in prehistoric times.

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How did birds survive the KT impact?

As I understand it, the ejecta resulting from the K-T impact (also known as the end-Cretaceous or Cretaceous-Tertiary extinction event) re-entered the atmosphere all over the world; the heat from ...
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Why are the largest land/air animals today smaller than in the Mesozoic?

The largest dinosaurs and pterosaurs seem to have been much larger than the largest animal terrestrial/avian species since. Was the Mesozoic somehow more hospitable to large animal species than ...