Examlex
Aposematic, or warning, coloration in poison frogs was found by Juan Santos and colleagues to be polyphyletic. What does this indicate about aposematic coloration?
Cenozoic
The current geological era, beginning 66 million years ago and marked by significant evolutionary developments.
Punctuated Equilibrium
A hypothesis that new organisms or new characteristics of an existing organism appear rather suddenly in geologic terms instead of evolving gradually.
Fossil Record
The totality of fossilized plants and animals found in the earth's crust, providing evidence of past life forms.
Evolution
The observed changes in the fossil record or in living organisms; also used to refer to theories that help explain the observed changes.
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