Erik A. Sperling
= Erik A. Sperling
{c}
An author of https://historical-geobiology.stanford.edu/sites/g/files/sbiybj25131/files/media/file/sperling_2013_pnas_cambrian_oxygen_and_ecology_final.pdf[the primary study linked here].
= Erik A. Sperling
{c}
An author of https://historical-geobiology.stanford.edu/sites/g/files/sbiybj25131/files/media/file/sperling_2013_pnas_cambrian_oxygen_and_ecology_final.pdf[the primary study linked here].