The Yutyrannus, described in 2012, are the largest known dinosaurs with feathers—a patch of fossilized skin shows shaggy body feathers, similar to an emu. Yutyrannus was related to T. rex and measured 30 feet long and weighed more than 3,000 pounds. Illustration by Brian Choo.
Amazing Yutyrannus by ~HodariNundu on deviantART | “Meet the first giant feathered tyrannosauroid. … It was up to 9 meters long (being the largest confirmed feathered animal) and lived in a temperate to cold climate so its feather-coat was most likely a winter coat. Three skeletons were found, and although the coat isn´t intact in any of them, everything seems to indicate they were covered on feathers from head to toe.”
The newly described dinosaur Zhenyuanlong suni measured 5 feet in length and was a relative of the velociraptor. The fossil’s well-preserved wings bore complex feathers, not simple hairlike structures. Illustration by Zhao Chuang.
During the PETM, some mammals adapted by temporarily shrinking. One of the earliest complete horse skeletons illustrated on the photo is from a period few million years later in the Eocene, being similar to its ancestors, only larger by 50 percent. Reference: http://people.earth.yale.edu/sites/default/files/lysoscience.pdf http://www.pnas.org/content/105/6/1960.full.pdf http://www.sciencemag.org/content/335/6071/959 -- Consumer consumes more This was illustrated by a…