Classification_Of_The_Red_Kangaroo_And_The_Banksia_Ornata

Classification Of The Red Kangaroo And The Banksia Ornata Eutherian mammals, or placental mammals, once dominated the lands of Australia. However, through convergent evolution, marsupials have branched out and filled the recesses formerly occupied by their closely related eutherian counterparts. After Pangea was broken up, South America and Australia became island continents. This cutting off resulted in the diversification of the marsupials. The isolation forced them to begin an adaptive radiation from the placental mammals on the northern continents. Because Australia has had no contact with another continent since the Cenozoic era (about 65 million years ago), no new species has been introduced, thus causing the ones already present to adapt to the new and permanent environment. So, the red kangaroo, or at least a close relative of it, came into existence during this time. Macropus rufus, commonly known as the Red Kangaroo, is classified into the Kingdom Amimalia because it is an animal. It is in the Phylum Chordata because it has a notochord, a hollow nerve cord, pharyngeal slits (in the womb), and a postanal tail. It is placed in the Class Mammalia because they have mammary glands that produce milk to nourish their young, have hair, are because, years, million, ago, about, ornata, kangaroo, banksia, species, red, period, banks, australia, paleozoic, mammals, classified, tail, solander, rufus, present, plants, placental, phylum, pangea, pair, order, ones, new, named, mr, marsupials, macropus, long, known, kingdom