Polar dinosaur tracks open new trail to past

Paleontologists have discovered a group of more than 20 polar dinosaur tracks on the coast of Victoria, Australia, offering a rare glimpse into animal behavior during the last period of pronounced global warming, about 105 ...

Systematic position of Archaeopteryx challenged?

Archaeopteryx has been considered the most primitive and earliest known bird ever since its discovery, and has been placed at the base of Avialae in nearly all numerical phylogenetic analyses. In 2011, a parsimony-based phylogenetic ...

It's a Tyrannosaur-eat-Tyrannosaur world

A nasty little 66-million-year-old family secret has been leaked by a recently unearthed tyrannosaur bone. The bone has peculiar teeth marks that strongly suggest it was gnawed by another tyrannosaur. The find could be some ...

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