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Order: Xenarthra Families Mylodontidae & Pampatheriidae PowerPoint Presentation
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Order: Xenarthra Families Mylodontidae & Pampatheriidae

Order: Xenarthra Families Mylodontidae & Pampatheriidae

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Order: Xenarthra Families Mylodontidae & Pampatheriidae

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  1. Order: XenarthraFamilies Mylodontidae & Pampatheriidae Excavating Vertebrate Fossils Jeff Good http://users.tamuk.edu/kfjab02/pdf%20jpg%20gif%20files/paramylodon.jpg http://www.fossil-treasures-of-florida.com/images/Holmesina.jpg

  2. Xenarthra • Modern examples: Sloths, Anteaters, Armadillos • “Strange Joints” • Refers to extra surfaces for articulation called xenapophyses in the vertebra • Unique presence of osteoderms in most members • Unique dentition to shear vegetation http://www.utep.edu/leb/Pleistnm/taxaMamm/Cingulata.htm

  3. Xenarthra in Mammalian Phylogeny http://ars.els-cdn.com/content/image/1-s2.0-S0960982212008068-gr3.jpg

  4. Xenarthra Phylogeny http://ars.els-cdn.com/content/image/1-s2.0-S1055790311004799-gr3.jpg

  5. Mylodontidae - Classification • Superorder: Xenarthra • Order: Pilosa • Suborder: Folivora • Family: Mylodontidae • Genera: Acremylodon, Glossotheriopsis, Glossotherium, Lestodon, Lestodontidon, Megabradys, Mylodon, Mylodonopsis, Paramylodon, Pleurolestodon, Promylodon, Ranculcus, Simomylodon, Sphenoterus, Statsdon, Thinobadistes, Urumacoterium. http://tanystropheus.files.wordpress.com/2009/06/ground-sloths.jpg?w=510

  6. Genus: Paramylodon • Ground Sloth • Extinct 11 kya • Three meters in length • Roamed grasslands and woodlands of N. America • Hairy body, massive jaws, massive three clawed limbs, blunt snout • Lack of incisors and high crowned molars suggest herbivore • Found at Millennium Site: osteoderms and teeth http://farm4.static.flickr.com/3080/3487489082_b8da5c678d.jpg http://www.fossil-treasures-of-florida.com/images/paramylodontooth2.jpg

  7. Pampatheriidae Classification • Superorder: Xenarthra • Order: Cingulata • Family: Pamatheriidae • Genera: Holmesina, Kraglievichia, Machyldotherium, Pampatherium, Plaina, Scirrotherium, Vassallia http://blog.hmns.org/wp-content/uploads/2009/03/armadillo-4x6.jpg http://www.skullsunlimited.com/userfiles/image/category5_species_1543_large_3.jpg

  8. Genus: Holmesina • Giant Armadillo • Extinct 12 kya • 2.6 meters weighing up to 200kg (440 lbs) • Armored carapace much like modern Armadillos • Carapace flexible with three lateral bands of scutes • Powerful jaws capable of more movement = Primarily herbivore (contrary to modern omnivorous armadillos) • Found at Millennium Site: Osteoderms and Phalanx http://www.avph.com.br/jpg/holmesina.jpg http://www.fossil-treasures-of-florida.com/images/GiantArmadilloScutes.jpg

  9. Works Cited • Hulbert, R. C. (Ed.). (2001). The Fossil Vertebrates of Florida. Gainesville, FL: University Press of Florida. • http://library.sandiegozoo.org/factsheets/_extinct/sloth_extinct/extinct_sloth.htm • http://en.wikipedia.org/wiki/Pampatheriidae • http://en.wikipedia.org/wiki/Mylodontidae • http://carnivoraforum.com/topic/9428975/1/