And nary a fucking ark to be seen....

[Anomalocaris]

Why is it safe to say that all dinosaurs evolved starting out with feathers, from one archaeological find?

I am not sure you would find much related to dinosaurs in any archeology find, unless you fell, hit your head, and are trying to make up shit to support xtain bullshit about there being dinosaurs on the ark.



The point is this. It is almost universally accepted that the term dinosaur encompass two different lineages of animals - saurischians and ornischians - that separated from each other at the very earliest stages of dinosaurian evolution.

It is now commonly accepted that many later saurischian dinosaurs had very bird like anatomical features, including feathers, and true birds were closely related to and probably evolved from a bird like saurischian dinosaur. But recent discovery suggests feathers also existed on dinosaurs of the other major branch, the ornischians.

Since the chance that morphologically very similar feathers would evolve twice, once In saurischians, once in ornischians, seem slim, the presence of feathers in both saurischian and ornischians branches of dinosaur family suggests feathers had been a feature of their common ancester, the very first dinosaur.

Here is a new view of bird evolution that is even more startling.

It is now commonly accepted that birds are evolved from dinosaurs, and are thus a kind of dinosaur. But some paleontologist, noting fossil evidence keeps pushing the date of first bird to evolve from dinosaurs further and further, and closer and closer to the very first dinosaur, and all dinosaurs family branches seem to have bird like characteristics, suggest we actually had it the other way around.

They suggest Dinosaurs did not predate birds and evolve into birds. Instead the first birds predated dinosaurs, and both families of dinosaurs represent descendants of flying birds that secondarily lost its flight capability and became fully adopted to terrestrial living.

If that view gains further support, it would be interesting and paradigm shifting.