Organic matter decomposes and sediment takes its place during the fossilisation process, turning bones to rock. Soft tissue and proteins do not stick around. But in at least one 195-million-year-old dinosaur rib bone, some ancient bits of collagen protein found a way.
Tagged With proteins
Researchers working in Africa have uncovered 3.8 million-year-old protein fragments encased in an ostrich eggshell. These biological building blocks are millions of years older than the oldest DNA ever found, highlighting the possibility of recovering ancient proteins from extinct animals — and even the remains of early humans.
Sometimes, bad luck leads to insights. A study published today in the Journal of Clinical Investigation has added a new twist to the way the system that controls puberty in mammals develops inside the brain, thanks to two brothers who both inherited a combination of genes for Kallmann syndrome.