Characterization of Amphibian Ontogenies and the Use of Staging Tables.

The article discusses the characterization and the use of staging tables of amphibian ontogenies, the period and sequence of developmental events. Topics discussed include the prominent tubercle on the males of mertensiella luschani, the amphibians' reproductive senility, and the factors of the ecology, populations, and the physical environment during a life span of amphibians.