Scansoriopterygidae scansoriopterygids had a semilunate carpal (half-moon shaped wrist bone) that allowed for bird-like folding motion in the hand. Even if powered flight was not possible, this motion could have aided maneuverability in leaping from branch to branch. The adult specimen of "Epidexipteryx" lacked preserved feathers around the forelimbs, but preserved simple feathers on the body and long, ribbon-like feathers on the tail. The tail feathers, likely used in display, consisted of a central shaft (rachis) and unbranched vane (unlike the vanes of modern feathers, which are broken up into smaller filaments or barbs). "Yi" also preserves feathers. These are notably
Calamus Swamp website, Calamus Swamp has a unique plant community. Because of the moist soil, trees such as the American Elm, Green Ash and, in places, Red and Silver maples make up the swamp forest. Calamus Swamp has a wide range of birds and animals: Because the Scioto River is only away, the lake attracts many migrating water birds, such as ducks, geese, grebes, and others. Mammals that have been spotted here include raccoons, muskrats, groundhogs, opossums, and white-tailed deer. The lake is home to other animals including the Ohio fairy shrimp, white leech, horse leech, giant water bug, pond snail, and