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Mammals are defined by how and what we eat every single day of our lives. It is no wonder then that jaws are a pretty big deal for our anatomy and biology. Now, a 225-million-year-old fossilized jaw ...
These fossils, belonging to the mammal-precursor species Brasilodon quadrangularis and Riograndia guaibensis, offer critical insights into the development of the mammalian jaw and middle ear, ...