<< Anchiornis’ contour feathers revealed a newly-described, extinct, primitive feather form consisting of a short quill with long, independent, flexible barbs erupting from the quill at low angles to form two vanes and a forked feather shape >>
Feathered, Bird-Like Dinosaur Anchiornis Was Even Fluffier than We Thought. Nov 30, 2017
http://www.sci-news.com/paleontology/feathered-bird-like-dinosaur-anchiornis-05485.html
https://m.phys.org/news/2017-11-feathered-dinosaurs-fluffier-thought.html
Evan T. Saitta, Rebecca Gelernter, Jakob Vinther. Additional information on the primitive contour and wing feathering of paravian dinosaurs. Palaeontology. doi: 10.1111/pala.12342. Nov 28, 2017.