[1]
Cadle, J.E. 2011. Hemipenial morphology in the North American snake genus Phyllorhynchus (Serpentes: Colubridae), with a review of and comparisons with natricid hemipenes. Zootaxa. 3092, 1 (Nov. 2011), 1–25. DOI:https://doi.org/10.11646/zootaxa.3092.1.1.