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Re: "Cope's Rule" Put to the Test



At 10:36 PM 1/26/97 -0500, George Olshevsky writes:
Name a tetrapod family or other clade most of whose included
>genera and species are of a >significantly< smaller adult size (factor of two
>or more) than its earliest-known member or hypothesized common ancestor. For
>every one you name of the latter, I'll name three that show the opposite
>trend.

Dendrobatid frogs
Pygmy chamaeleons (I think)
hummingbirds
Passeriformes
hyraxes
dwarf lemurs

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Ronald I. Orenstein                           Phone: (905) 820-7886
International Wildlife Coalition              Fax/Modem: (905) 569-0116
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