?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Close&rft.aufirst=R&rft.au=Close%2C+R&rft.date=27+April+2020&rft.title=Proceedings+of+the+Royal+Society+B%3A+Biological+Sciences&rft.atitle=The+apparent+exponential+radiation+of+Phanerozoic+land+vertebrates+reflects+spatial+sampling+biases&rft.genre=article