This aught to ruffle a few feathers

 

Most dinosaurs had scales, not feathers, fossil analysis concludes 

Researchers have called time on a growing suspicion that many dinosaurs were not the dry, scaly animals of popular conception, but fluffy, feathered beasts instead.

Remains unearthed in recent years have revealed feathers or proto-feathers on a range of dinosaurs, leading some paleontologists to wonder if all of the animals evolved from a feathered ancestor and sported some kind of plumage themselves.

But while many meat-eating theropods, such as velociraptors and relatives of tyrannosaurs, were clearly clad in feathers, a fresh analysis of prehistoric remains suggests that most dinosaurs were scaly beasts after all.

Nicolás Campione, a dinosaur researcher at Uppsala University in Sweden, worked with scientists at the Natural History Museum in London and the Royal Ontario Museum in Toronto to survey some of the best-preserved dinosaur fossils from museums around the world.

The scientists collected information on around 75 species that are known from the fossil remains of their soft tissues to have had either scales or feathers. From these, they created a dinosaur family tree and used a statistical model to work out the odds of species having feathers at different points in dinosaur history.

“What we found from this analysis is that the first dinosaur was probably not feathered,” said Campione. “Feathers clearly evolved in the dinosaur lineage, but right now, the data do not point to a feathered ancestor for them all.”

The first dinosaurs evolved from reptiles more than 230 million years ago. Feathers are thought to have arisen more than once in dinosaur lineages, and while they live on and give flight to modern birds, feathers first emerged for other reasons: for warmth or to provide colourful plumage displays.

Last year, scientists announced the discovery in Siberia of Kulindadromeus, a small, 150 million-year-old, plant-eating dinosaur that had both scales and feathers. The finding of such an ancient plumage prompted the group to speculate that a fuzzy coating of feathers may have been the rule for dinosaurs rather than the exception. Some artists have run with the idea and drawn up depictions of giant feathered brontosaurs.

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Some sap has a story to tell

Dinosaur Feathers Discovered in Canadian Amber

Today a group of paleontologists announced the results of an extensive study of several well-preserved dinosaur feathers encased in amber. Their work, which included samples from many stages in the evolution of feathers, bolstered the findings of other scientists who've suggested that dinosaurs (winged and otherwise) had multicolored and transparent feathers of the sort you might see on birds today. The researchers also presented evidence, based on the feathers' pigmentation and structures, that today's bird feathers could have evolved from dinosaur feathers.

We've got a gallery of these intriguing feathers preserved in amber.

In a profile of lead researcher Ryan McKellar, The Atlantic's Hans Villarica writes:

These specimens represent distinct stages of feather evolution, from early-stage, single filament protofeathers to much more complex structures associated with modern diving birds... They can't determine which feathers belonged to birds or dinosaurs yet, but they did observe filament structures that are similar to those seen in other non-avian dinosaur fossils.

Villarica also did io9 readers a favor and asked McKellar whether this discovery could lead to a Jurassic Park scenario. McKellar said:

Put simply, no. The specimens that we examined are extremely small and would not be expected to contain any DNA material. To put this into context, the only genetic material that has been recovered from amber is from lumps of mummified insect muscle tissue in much younger Dominican amber that are approximately 17 million years old and well after the age of dinosaurs.

So much for our dreams of dino domination.

See more beautiful amber with feathers here

The golden age of dinosaur discovery

According to John Pickrell, the editor of Australian Geographic, we live in a golden age of dinosaur discoveries. The most important of these may be that the dinosaurs didn’t die out when an asteroid hit earth 66 million years ago. In fact, they still live among us... as birds.
Imagine, if you will, a world filled with billions of dinosaurs. A world where they can be found in thousands of shapes, sizes, colours and classes in every habitable pocket of the planet. Imagine them from the desert dunes of the Sahara to the frozen rim of the Antarctic Circle, from the balmy islands of the South Pacific to the high peaks of the Himalayas.
You don’t have to imagine very hard. Dinosaurs didn’t die out when an asteroid hit the Earth 66 million years ago. In fact, wherever you live, you can probably step outside and look up into the trees and skies to find them: birds are dinosaurs and they are all around you.
We have learned more about dinosaurs in the two decades since Jurassic Park than we did in the thousands of years before it.

Everything I was told as a child was wrong.

Read more here