Shoshonia arctopteryx

Tiktaalik roseaelle uusi edeltäjä n.400:n miljoonan vuoden takaa:

http://www.sciencedaily.com/releases/2007/07/070731152131.htm

""The fossil shows that the ancestral pattern of lobed fins closely resembles the pattern in the fins of primitive living ray-finned fishes, according to the scientists.

“This ends intense debate about the primitive pattern for lobed fins, which involves the ancestry of all limbs, including our own,” said author Michael Coates, Ph.D., associate professor of organismal biology and anatomy at Chicago. ""

""Not only does this fossil bridge the gap between primitive ray-finned fish and limbed animals like Tiktaalik roseae, the new data forces scientists to reassess the characteristics of the coelacanths, Friedman said.“""