Researchers Discover Three New Extinct Kangaroo Species Canberra, 15 Apr (ONA)--- Researchers from Flinders University have unveiled the discovery of three new extinct kangaroo species that roamed Australia between 5 million and 40,000 years ago. Belonging to the extinct genus Protemnodon, these creatures were described as resembling modern grey kangaroos but were more robust. Among the recently discovered species is Protemnodon viator, tipping the scales at 170 kilograms, doubling the dimensions of the present-day red kangaroo. Conversely, Protemnodon ...