<< 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
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.