The limb, complete with skin, is just one of a series of remarkable finds emerging from the Tanis fossil site in the US State of North Dakota. But it's not just their exquisite condition that's ...

Spring is a time for budding flowers, tender green leaves and baby animals. But 66 million years ago, that gentle season instead brought mass death and carnage from Earth's catastrophic impact with a ...

And at Tanis, the fossils record the moment this ... 3,000km from the Gulf to North Dakota, despite the likely presence back then of a seaway cutting directly across the American landmass.