pose an immediate threat. Fragmentation of their habitats due to human development and the desiccation of streams is the biggest threat to the species, which is protected in Mexico. Classification controversy This species has been suggested to be the same species as the Lake Patzcuaro salamander, Ambystoma dumerilii, based on genetic analysis, but their habitats have been isolated for 7–10 million years A. dumerilii is also wholly neotenic, while A. ordinarium is variable but mostly terrestrial. References External links ZipcodeZoo.com Comparative Toxicogenomics Database NLBIF Biodiversity data portal Mole salamanders Endemic amphibians of Mexico Fauna of the Trans-Mexican Volcanic Belt Amphibians described in 1940