From the AWeb site:
The Center for Biological Diversity last week petitioned the California Fish and Game Commission to list all populations of mountain yellow-legged frogs (Rana muscosa, in the southern Sierra and Transverse Ranges, and Rana sierrae, in the central and northern Sierra) as endangered.
Once these frogs were the most abundant amphibians in the Sierras; surveys since 1995 show that they have been extirpated from nearly 95% of 225 historically known localities. Currently only the Southern California population of Rana muscosa is listed as endangered.
