About: Macraucheniidae   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Macraucheniidae is a family in the Litopterna order of extinct South American ungulates. The recessed nasal bones of their skulls suggest that they may have had a small proboscis, or trunk. Their hooves were similar to those of rhinoceroses today, with a simple ankle joint and three digits on each foot. Thus, they may have been capable of rapid directional change when running away from predators, such as large Phorusrhacid terror birds and Smilodon saber-toothed cats. Macraucheniids probably lived in large herds to gain protection against these predators, as well as to facilitate finding mates for reproduction.

AttributesValues
rdfs:label
  • Macraucheniidae
rdfs:comment
  • Macraucheniidae is a family in the Litopterna order of extinct South American ungulates. The recessed nasal bones of their skulls suggest that they may have had a small proboscis, or trunk. Their hooves were similar to those of rhinoceroses today, with a simple ankle joint and three digits on each foot. Thus, they may have been capable of rapid directional change when running away from predators, such as large Phorusrhacid terror birds and Smilodon saber-toothed cats. Macraucheniids probably lived in large herds to gain protection against these predators, as well as to facilitate finding mates for reproduction.
sameAs
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dbkwik:fossil/prop...iPageUsesTemplate
Familia
  • (Gill, 1872)
  • Macraucheniidae
Name
  • Macraucheniidae
Caption
  • Macrauchenia
ordo
classis
  • Mammalia
Phylum
regnum
  • Animalia
abstract
  • Macraucheniidae is a family in the Litopterna order of extinct South American ungulates. The recessed nasal bones of their skulls suggest that they may have had a small proboscis, or trunk. Their hooves were similar to those of rhinoceroses today, with a simple ankle joint and three digits on each foot. Thus, they may have been capable of rapid directional change when running away from predators, such as large Phorusrhacid terror birds and Smilodon saber-toothed cats. Macraucheniids probably lived in large herds to gain protection against these predators, as well as to facilitate finding mates for reproduction. The family Macraucheniidae includes genera such as Theosodon, Xenorhinotherium, and Macrauchenia. Macrauchenia is the best-known and most recent macraucheniid. It became extinct during the Pleistocene Epoch. It was one of the few litopterns to survive the ecological pressures of the Great American Interchange between North and South America, which took place after the Isthmus of Panama rose above sea level some 3 million years ago. It may instead have died out in the aftermath of the invasion of the Americas by human hunters. When Macrauchenia died out, so too did the Macraucheniidae and the entire litoptern order.
is Familia of
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