Bats may have first evolved in Europe 65 million years ago - Science Daily

Chinese scientists have unearthed a fossil of the earliest known flightless bird, offering compelling evidence that not all early birds evolved to take to the skies. The discovery could also challenge long-held assumptions – including ideas dating back to evolutionary theorist Charles Darwin – that flightlessness in birds arose only as a secondary adaptation after earlier species had mastered flight. The 150 million-year-old fossil of the Late Jurassic avialan Yuezhuornis yangyuanensis found in...

image: From biological camouflage to multispectral signature management and adversarial attacks on AI vision, each advance in perception has driven new ways to stay unseen. A research team led by Professor Yongxiang Liu at the National University of Defense Technology recently published a review article titled ‘The Evolution of Anti-Visual Perception: Biomimetics, Spectral Physics, and Artificial Intelligence’ in National Science Review. The review introduces anti-visual perception as a unifying concept, bringing biomimetic camouflage, multispectral signature management, and adversarial attacks on machine vision into one framework.

After using a technique called molecular clock analysis, researchers have proposed that the origin of animals could be 200 million years earlier than thought.