A small matter of head anatomy has long been a cause of controversy among those interested in vertebrate evolution. An answer that may prove generally palatable now emerges from an ancient fossil fish.
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Janvier, P. Wandering nostrils. Nature 432, 23–24 (2004). https://doi.org/10.1038/432023a
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DOI: https://doi.org/10.1038/432023a
