Kirtland stream

Finished at last!

This took some time, but here it is with colours and details.

An adult and a juvenile Bistahieversor sealeyi are peacefully walking through the subtropical floodplains of the campanian Kirtland formation in New Mexico, 74.5 million years ago.
A recent hurricane passed by, and uprooted many trees and made the rivers flood, depositing new nutritious sediments on the banks.
In the murky river, two indeterminate hesperornithids dive for food and are chased away by the eager, young, tyrannosaur.
The soft mud shows several kinds of footprints, among which are some very unusual ones. Those belong to the *tapejarid* Navajodactylus boerei, that recently took advantage of the many invertebrates in the mud, as well as crustaceans. 
A small Chamops-like lizard is basking on a rock.

*- It is not exactly known what Navajodactylus really was, but it was probably a non-azhdarchid azhdarchoid. 

But there's the one million dollar question: Why is it covered in feathers? Didn't Bell et al. come to the conclusion all tyrannosaurids were scaly?
Well there's two reasons.

1. I made the lineart before Bell et al. published their paper.

2. I disagree with that conclusion. Most of the scale impressions that support a scaly rex, are only found on very large tyrannosaurines such as T.rex itself and Tarbosaurus bataar, while the smaller tyrannosaurids so far have no yielded any scaly impressions from regions besides the tail bottom and legs. This is why Do acknowledge the likely scaly nature of T.rex, but this is not indicative whatsoever that smaller tyrannosaurids couldn't still be feathered. As Bell et al. noted, larger sizes are a likely factor behind the integument loss. Their conclusion that all tyrannosaurids are scaly rests on the assumption that a scaly tail bottom means scaly animal. I disagree. Even Yutyrannus has scales on the tail bottom.

3. Bistahieversor is a non-tyrannosaurid tyrannosauroid. It's very close to tyrannosauridae though.

Conclusion: don't feather your gigantic theropods too much, but continue to feather your smaller tyrannosaurids.

For