The new technique measures the concentration of clumps of carbon-13 and oxygen-18 within bioapatite, a mineral in the teeth. The amount these two isotopes bond together depends on the temperature of the host animal, with colder body temperatures leading towards more bonding.
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HOW MANY DEGREES WAS IT THEN???
Or even complete fiction.
The so called "science" behind these assumptions is really really wonky. Since they didn't include the plus or minus 150 degrees margin of error to the stated average, I'm thinking their results is a mix between pure speculation and wishful thinking.
Must be grant writing time again for the Caltech guys.