top of page
< Back
camelmoreli.png

Robust Ground Sloth

Glossotherium robustum

🦥

Chordata

Mammalia

Pilosa

Mylodontoidea

Mylodontidae

Glossotherium robustum

The Southern Giant Ground Sloth, Glossotherium robustum, was a massive South American herbivore that roamed the open Pampas and wetlands of the Late Pleistocene, shaping the landscape as it foraged and dug for roots.

Description

Glossotherium robustum, commonly known as the Robust Tongue Beast, was a substantial ground sloth native to South America during the Pliocene and Pleistocene epochs. Measuring about 4 meters in length and standing 1.6 meters tall at the shoulders, it weighed between 1,000 and 1,500 kilograms. Its broad, muscular build and powerful limbs suggest it was well-adapted to its environment. Unlike modern tree-dwelling sloths, Glossotherium was terrestrial. Its broad snout and unique dentition indicate a diet primarily consisting of grasses and other low-lying vegetation, classifying it as a grazer. Notably, Glossotherium possessed a large nasal cavity, which may have been used to produce infrasound for communication or mating calls. Its robust forelimbs and claws suggest it could have been capable of digging, possibly creating burrows for shelter, making it one of the largest known burrowing mammals.

Quick Facts

Max Mass

Shoulder Height

Standing Height

Length

Diet

Trophic Level

1000

1.2

1.8

3.2

kg

m

m

m

Mixed Feeder

Herbivores – Browsers

Hunt History

Humans coexisted with Glossotherium robustum in South America, and there is archaeological evidence suggesting it was hunted and butchered by early Paleoindians. Its large size and slow movement would have made it a valuable but challenging prey animal.

Earliest Archaeological Evidence of Human Predation:

Arroyo Seco 2 (Buenos Aires Province, Argentina, ~12,000 BP) — Fossil bones of Glossotherium associated with Fishtail projectile points and cut marks consistent with butchery.

Campo Laborde (Pampas region, Argentina, ~12,600 BP) — Direct association of Glossotherium robustum remains with stone tools and evidence of human processing.

Paso Otero 5 (Buenos Aires Province, Argentina, ~12,500 BP) — Burned bone fragments and lithic tools linked to Glossotherium, suggesting carcass dismemberment and cooking.

Time & Range

Extinction Status

Globally Extinct

Extinction Date

Temporal Range

Region

10000

BP

Late Pleistocene

South America

Wiki Link

Fat Analysis

Fatness Profile:

Medium

Fat %

7

Est. Renderable Fat

70

kg

Targeted Organs

Subcutaneous pads, visceral fat

Adipose Depots

Subcutaneous pads (inguinal/abdominal), visceral; marrow

Preferred Cuts

Marrow & abdominal depots

Hunt Difficulty (x/5)

4

Ethnography List

Historical Entries

  • Facebook
  • Twitter
  • Instagram
  • Reddit's r/Ketoscience
bottom of page