New analysis promps scientists to rethink.

A new discovery of a fish called  Janusiscus schultzei, was found imbeded in a rock. The fossel provided evidence that the fish was a relative of a bony fish. However, recent tests and observations have provided evidence that the fish is a relative of a cartilaginous species. The tests showed that the fossel had traces of the partial skull roof and brain case looked vary similar to that of a bony fish. Though the scientists also found that the placement of blood vessels in the brain case located above and between the jaws were like that of a cartilaginous due to new and improved 3-D scans and X-Rays. Thus the name of the creature became Janusiscus schultzei.

This article relates to our current topic in Biology, Evolution. Scientists found that this particular fish could have a common ancestor that lived over 420 million years ago. However, recent data says that these shark-like creatures are highly evolved and in the past had lots of bone, linking them to the evolution of sharks. Thus explaining that over time the creatures like sharks are not primitive, but had evolved far, just like humans.

Article Page: http://www.the-scientist.com/?articles.view/articleNo/41893/title/Reassessing-One-Really-Old-Fish/