Longevity Records:
Life Spans of Mammals, Birds, Amphibians, Reptiles, and Fish

References

Hydrurga leptonyx (Leopard seal)

[100]Grzimek, B., ed. 1990. Grzimek's Animal Life Encyclopedia. Mammals I - IV. ed. Series. Grzimek, B. Vol. I-IV. New York: McGraw-Hill Publishing Company.
[157]King, J.E., 1983. Seals of the World. London: British Museum Natural History.
[166]Kooyman, G.L., 1981. Leopard seal--Hydrurga leptonyx, in Handbook of Marine Mammals, S.H. Ridgway and R. Harrison, Editors. London: Academic Press: p. 261-274.
[291]Skinner, J.D., J.H.M. VanZyl, and J.A.H. VanHeerden, 1973. The effect of season on reproduction in the black wildebeest and red hartebeest in South Africa. Journal of Reproduction and Fertility Supplement 19: 101-110.

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