Living Spell CR and level adjustment?

[RandomPrecision]

Is there a simply way to find the CR of a Living Spell, based on the level? The example creatures have CR listed, so I could probably figure it out at least roughly, but frankly, I feel too lazy right now. I'm not sure how one would figure out the level adjustment for one, particularly since I don't have Savage Species with me right now.

Not that I was even vaguely considering trying to play an awakened living spell...

 

[Laman Stahros]

According to MMIII;

CR = spell level of spell + 1/2 caster level, rounded down.
​

If your combining two or more spells;

CR = spell level of highest level spell + 1/2 caster level + 1/2 the sum of the additional spell levels.
​

No LA listed.

 

[RandomPrecision]

Ouch...I guess I should have the book open when I ask about something in it...