Paleontologists with Hokkaido University Museum working with a colleague from the American Museum of Natural History has found evidence that suggests one type of dinosaur may have been able to make bird-like calls. In their paper published in the journal Communications Biology, Junki Yoshida, Yoshitsugu Kobayashi and Mark Norell describe their study of a larynx fossil from a Pinacosaurus grangeri dinosaur and features that suggest it may have allowed the ancient creature to make bird-like sounds.
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Source: Phys.org