FIGURE 43. Left hind feet of (a) platypus (Ornithorhynchus) \ (b) the in- 

 sectivore Galemys ; (c) the marsupial Chironectes ; the otters (d) Aonyx, 

 (e) Microaonyx, and (/) Lutra maculicollis; (g) sea otter (Enhydra) ; 

 (h) beaver (Castor) ; and (;') muskrat (Ondatra): (d, e, and / redrawn 

 from Allen). 



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