The oldest-known animal eggs and embryos, whose first pictures made the cover of Nature in 1998, were so small they looked like bugs – which, it now appears, they may have been. This week, a study in ...

In the Cretaceous period, Earth was plagued by widespread volcanic activity, oceanic oxygen depletion events, and mass extinctions. Fossils from that era remain and continue to give scientists clues ...

Newly analyzed dinosaur eggs from China are offering an unusually intimate look at how these animals reproduced, grew, and nested in the final chapters of the Cretaceous. From clutch sites preserved ...