“Depending on how you tweak the character matrix, Guiyu is either a very primitive sarcopterygian (lobe-finned fish) or a stem-group osteichthyan from before the lobe-fin/ray-fin split. The fossils of this fish are the paleontological equivalent of the Rosetta stone” (..) Continues here
(via scientificillustration)
Anchiornis and Scaphognathus anatomy, by Ville Sinkkonen
(via scientificillustration)



