scholarly article Exploring the evolution of environmental sex determination, especially in reptiles 1775 1784 19 6 https://doi.org/10.1111/j.1420-9101.2006.01138.x https://www.ncbi.nlm.nih.gov/pubmed/17040374 P. C. Phillips Exploring the evolution of environmental sex determination, especially in reptiles F. J. Janzen Journal of Evolutionary Biology