Illinois Natural History Survey - University of Illinois

  Key to Illinois Mammal Skulls

 

  Lagomorpha (rabbits, hares, pikas)

» Postorbital processes partly fused to braincase, leaving open slits… Eastern Cottontail

» Postorbital processes almost entirely fused to braincase, leaving small holes… Swamp Rabbit

 

INHS-MammalSkullKey-Button-back.png   INHS-MammalSkullKey-Button-StartOver.png



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