paleoillustration:

Guiyu oneiros by Brian Choo:
“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

paleoillustration:

Guiyu oneiros by Brian Choo:

“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)