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| | MOLECULES, MORPHOLOGY, AND THE PHYLOGENETIC POSITION OF LAURASIAN AND GONDWANAN "CONDYLARTHS" (Site not responding. Last check: 2007-10-21) |
 | | Over the course of the past decade, molecular phylogenetic analyses have revolutionized our understanding of the higher-level interrelationships of placental mammals, and have provided an entirely new context within which the late Cretaceous and early Palaeogene placental radiation must now be interpreted (e.g., Murphy et al., 2001). |
 | | One novel hypothesis derived from this work is the idea that the recently recognized supraordinal clade Afrotheria (containing elephants, sea cows, hyraxes, elephant-shrews, aardvarks, tenrecs, and golden moles) originated on the Afro-Arabian landmass and evolved in isolation there through the latest Cretaceous and much of the early Cenozoic. |
 | | However a recent study (Asher et al., 2004) suggested that some of the "condylarths" from the Laurasian Palaeogene (hyopsodontids and phenacodontids) that have traditionally been allied with the laurasiatherian artiodactyls and perissodactyls are actually primitive members of the afrotherian radiation. |
| www.earth.ox.ac.uk /research/2005/MoleculesMorph.html (351 words) |
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