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Re: Response to Orenstein's "explanation" of mammal success.

In a message dated 96-06-10 15:54:23 EDT, jbois@umd5.umd.edu (John Bois)

> The general rule, then, applies: mammals do better in the
> big-animal, open-field niche than egg-layers.

Hey, hey, slow down there!

There are many differences between monitor lizards, crocs, ratites,
and mammals besides oviparity/viviparity!

For instance, perhaps your general rule should be "mammals do better
in the big-animal, open-field niche(s) than sprawling ectotherms or
big, armless, toothless bipeds!"

Nick Pharris