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 E-Mail IMAGE: A reconstruction of the bohaiornithid Sulcavis, a close relative of Bohaiornis guoi, hunting an insect. view more  Credit: © S. Abramowicz, Dinosaur Institute, Natural History Museum of Los Angeles County. It s hard to know what prehistoric animals lives were like even answering seemingly simple questions, like what they ate, can be a challenge. Sometimes, paleontologists get lucky, and pristine fossils will preserve an animal s stomach contents or provide other clues. In a new study in Frontiers in Earth Science, researchers investigating the fossil of a bird that lived alongside the dinosaurs got more questions than answers when they found quartz crystals in the bird s stomach.

United statesJingmai oconnorShumin liuChina jehol groupInstitute of vertebrate paleontologyChicago field museumChinese academy of sciencesEarth scienceJingmaio connorVertebrate paleontologyChinese academyJehol groupJehol biotaEarly cretaceousJehol formationZoology veterinary science