Dating dinosaur bones Sexroomschatroulette
Several other sources have also yielded DNA, including paleofaeces, Contamination remains a major problem when working on ancient human material.
Ancient pathogen DNA has been successfully retrieved from samples dating to more than 5,000 years old in humans and as long as 17,000 years ago in other species.
In addition to the usual sources of mummified tissue, bones and teeth, such studies have also examined a range of other tissue samples, including calcified pleura,).
Taking preventative measures in their procedure against such contamination though, a 2012 study analyzed bone samples of a Neanderthal group in the El Sidrón cave, finding new insights on potential kinship and genetic diversity from the a DNA.
Still older sources of Lebanese amber-encased weevils, dating to within the Cretaceous epoch, reportedly also yielded authentic DNA.
— mitochondrial cytochrome b sequences that had apparently been extracted from dinosaur bones dating to more than 80 million years ago.
is a special issue that focuses on the investigation of dinosaur proteins inside fossil bones.
The research has added new complexity to the peopling of Eurasia.