Actinium (sometimes considered a transition metal)
Thorium
Protactinium
Uranium
Neptunium
Plutonium
Americium
Curium
Berkelium
Californium
Einsteinium
Fermium
Mendelevium
Nobelium
Lawrencium
Actinides
List of Elements Belonging to the Actinide Group
By Anne Marie Helmenstine, Ph.D., About.com
Plutonium is one of the actinides.
Deglr6328, wikipedia.org
Here is a list of elements that are actinides, a subset of the rare earth elements group.
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