Dating dinosour bones andorra dating site 2016

Rated 4.40/5 based on 590 customer reviews

The tissue was collagen, they reported in the journal Science, and it shared similarities with bird collagen — which makes sense, as modern birds evolved from theropod dinosaurs such as .

Iron is also highly reactive with other molecules, so the body keeps it locked up tight, bound to molecules that prevent it from wreaking havoc on the tissues.The specimens Schweitzer works with, including skin, show evidence of excellent preservation.The bones of these various specimens are articulated, not scattered, suggesting they were buried quickly.After death, though, iron is let free from its cage.It forms minuscule iron nanoparticles and also generates free radicals, which are highly reactive molecules thought to be involved in aging."The free radicals cause proteins and cell membranes to tie in knots," Schweitzer said.

Leave a Reply