  Data on the prevalence of bone cancer in dinosaurs is available from past
radiological examination of preserved bones. We statistically test this data
for consistency with rates extrapolated from information on bone cancer in
modern vertebrates, and find that there is no evidence of a different rate.
Thus, this test provides no support for a possible role of ionizing radiation
in the K-T extinction event.

Populations and Evolution;Astrophysics;Geophysics