215 eggs from Earth's first flying reptiles found in China
Brazil and China-based researchers have uncovered 215 fossilised eggs from a 120-million-year-old sandstone block found in China in 2015. The eggs, 16 of which still had remains of embryos, belong to pterosaurs, considered as Earth's first flying vertebrates. The study revealed pterosaurs laid soft-shell eggs, difficult to fossilise, like modern-day lizards, rather than hard-shell eggs like birds.