litopterns

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• Litopterna — Taxobox status = Fossil image width = 250px image caption = Macrauchenia name = Litopterna regnum = Animalia phylum = Chordata classis = Mammalia infraclassis = Eutheria superordo = †Meridiungulata ordo = †Litopterna ordo authority = Ameghino,… …   Wikipedia

• Great American Interchange — The Great American Interchange was an important paleozoogeographic event in which land and freshwater fauna migrated from North America via Central America to South America and vice versa, as the volcanic Isthmus of Panama rose up from the sea… …   Wikipedia

• Macrauchenia — Taxobox name = Macrauchenia fossil range = fossil range|7Late Miocene to Late Pleistocene status = fossil image width = 250px regnum = Animalia phylum = Chordata classis = Mammalia ordo = †Litopterna familia = †Macraucheniidae genus = †… …   Wikipedia

• litoptern — ▪ extinct mammal  any of various extinct hoofed mammals (mammal) that first appeared in the Paleocene Epoch (which began about 65.5 million years ago) and died out during the Pleistocene Epoch (which ended about 11,800 years ago). The order was… …   Universalium

• Oligocene — System Series Stage Age (Ma) Neogene Miocene Aquitanian younger Paleogene Oligocene …   Wikipedia

• Parallel evolution — is the independent evolution of similar traits, starting from a similar ancestral condition due to similar environments or other evolutionary pressures [ [http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookglossPQ.html Online Biology… …   Wikipedia

• Meridiungulata — Toxodon platensis Scientific classification Kingdom: Animalia …   Wikipedia

• Macraucheniidae — Taxobox name = Macraucheniidae status = Fossil image width = 250px image caption = Macrauchenia regnum = Animalia phylum = Chordata classis = Mammalia ordo = †Litopterna familia = †Macraucheniidae familia authority = Gill, 1872 Macraucheniidae is …   Wikipedia

• Didolodus — Temporal range: Early Eocene Scientific classification Kingdom: Animalia Phylum: Chordata Class …   Wikipedia

• Diadiaphorus — Temporal range: Early Miocene Restoration Scientific classification Kingdom …   Wikipedia

• Paranauchenia — Taxobox name = Paraunauchenia status = Fossil regnum = Animalia phylum = Chordata classis = Mammalia ordo = †Litopterna familia = †Macraucheniidae genus = † Paranauchenia species = † P. denticulata binomial = Paranauchenia denticulata binomial… …   Wikipedia