FIG. 1 in Pennaraptoran Theropod Dinosaurs Past Progress And New Frontiers

FIG. 1. Minimum glide speed (= stall speed) at CL = 1.5 for Microraptor specimens compared with those for anchiornithine specimens. Red bars represent masses from femoral length estimates, blue from femoral circumference. Note the higher average score, especially at comparable size classes for anchiornithines. Illustration used with the permission of Scott Hartman.