One species of mountain beaver occurs in California. Among the parasites of the mountain beaver is the largest flea known, "Hystrichopsylla schefferi". The mother of Mountain Beaver woman survived the starvation, but retreated to the mountain. The tuberosity can be very pronounced in fossorial (digging) animals, such as the mountain beaver. He later discovered that they were actually made by the mountain beaver, another rodent. Other fossils include amphibians, and rare finds of the mountain beaver and the blue grouse. Mountain Beaver Woman's son, the child Storm Wind, also survived. The mountain beaver ("Aplodontia rufa") is a North American rodent. Mountain beaver ("Aplodontia rufa") is a large primitive rodent endemic to the Pacific Northwest. Animals associated with the species include the mountain beaver ("Aplodontia rufa"), particularly in Canada.