Keywords: Canis lupus & Thylacinus cynocephalus.png Skeletons of grey wolf and thylacine 1883-93 File Beutelwolfskelett brehm png File WolfSkelLyd1 png Alfred Brehm Richard Lydekker PD-old Thylacinus cynocephalus skeletons Canis lupus skeletons Animal skeleton comparisons Convergent evolution |