Scientists 'to determine if dinosaurs were warm or cold-blooded'

Scientists have developed a system that could shed light on whether dinosaurs were cold or warm-blooded.

California Institute of Technology (Caltech) researchers unveiled what they said was the first method for direct measurement of the body temperatures of large extinct vertebrates using analyses of isotopes in animals' bones, teeth, and eggshells.

The findings were published in the early edition of the Proceedings of the National Academy of Sciences (PNAS).