By Jim Tan A previously unknown genus of primitive giant kangaroo that once roamed the rainforests of New Guinea has been described by a team of paleontologists from Flinders University in Australia. The researchers say they hope the findings, published in June, will reenergize the field of paleontological research on New Guinea, helping to uncover the island’s history and thus better understand its diverse and often unique modern-day flora and fauna. The chance discovery came about as lead author Isaac Kerr, a Ph.D. candidate at Flinders University, was reexamining a fossilized jawbone though…