1992
Hernández G.,E. F. Mendoza Q., E. Godínez C., I. Goyenechea MG. 1992. Ophryacus undulatus (Horned pit viper) digestive disturbance. Herp. Rev. 23(3):81-82.
Taxonomic summary of Conopsis, Günther, 1858(Serpentes: Colubridae)
Systematics: its history, methods and applications to snakes of the genus Conopsis
First records of herpetozoans in Zimapán, Hidalgo, Mexico
Amphibians and reptiles of the Mezquital Valley, Hidalgo, Mexico
Phylogenetic relationships of snakes of the genus Conopsis based on morphology.
The karyotype of Sceloporus macdougallii (Squamata: Phrynosomatidae)