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Megatherium (/ m ɛ ɡ ə ˈ θ ɪər i ə m / meg-ə-THEER-ee-əm; from Greek méga 'great' + theríon (θηρίον) 'beast') is an extinct genus of ground sloths endemic to South America that lived from the Early Pliocene [1] through the end of the Late Pleistocene. [2]
The group includes the heavily built Megatherium (given its name 'great beast' by Georges Cuvier [4]) and Eremotherium. An early genus that was originally considered a megatheriid, the more slightly built Hapalops, reached a length of about 1.2 metres (3.9 ft). The nothrotheres have recently been placed in their own family, Nothrotheriidae. [5]
A number of kill sites are known for ground sloths in the Americas, these include Campo Laborde in the Pampas of Argentina, where an individual of Megatherium americanum was butchered at the edge of a swamp, dating to approximately 12,600 years Before Present (BP), [63] with another potential Megatherium kill site being Arroyo Seco 2 in the ...
The Paleontological Museum Megatherium (Spanish: Museo Paleontológico Megaterio) is a museum in the province of Santa Elena in Ecuador, located in the Universidad Estatal Península de Santa Elena. It is considered the first museum of paleontology in Ecuador .
Promegatherium ("before Megatherium") is a genus of prehistoric xenarthrans that lived in Argentina, during the Late Miocene.This genus is regarded as closely related to the later, and more famous genus, Megatherium, hence the reference in the name.
The hypsodonty index (ratio of the height of the horizontal bony body of the mandible to the length of the row of teeth) for Megathericulus was 0.92 and thus indicates an average value for Megatheria (Megatheriops and Pyramiodontherium below 0.9, Megatherium and Anisodontherium above 1.0).
Within the Megatheriidae there are two (possibly three) subfamilies; the Megatheriinae and the Planopsinae. The phylogenetically older group is represented by the Planopsinae from the Lower and Middle Miocene.
Nothrotheriops is a genus of Pleistocene ground sloth found in North America, from what is now central Mexico to the southern United States. [1] This genus of bear-sized xenarthran was related to the much larger, and far more famous Megatherium, although it has recently been placed in a different family, Nothrotheriidae. [2]