A remarkably preserved bird skull unearthed in Brazil contains impressions of advanced brain structures, suggesting early birds were bright like modern ones.
, evolutionarily speaking, or does it trace back tens of millions of years?
Birds began to evolve about 165 million to 150 million years ago from dinosaurs. Some of the earliest—whose ancestors were carnivorous icons such as. Over time, avians branched into a group called the enantiornithines and close cousins who became modern birds. In 2004, co-author William Nava, a paleontologist at the Marília Museum of Paleontology, unearthed an unusual 80-million-year-old fossil deposit near the city of Presidente Prudente in southeastern Brazil. From this urban bone bed, researchers dug up a 1-centimeter-wide partial skull embedded with other bones in a thick chunk of rock.
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