Ground Sloths 

Return to southwestern US   Return to Brazil    Return to southeastern USA


Use this part to access resources about each of the three giant ground sloths known from the southwestern US.


  Harlans Ground sloth                                      Jefferson’s Ground sloth                                            Shasta Ground sloth

Paramylodon harlani                               Megalonyx jeffersoni                                 Nothrotheriops shastensis

Inferred diet of P. harlani                         On the origin of the name                           Story of its discovery

Rare find in Arizona                                Thomas Jefferson’s report of                      Giant sloth

Extinct giant ground sloth (all 3)                   the clawed animal (p. 246-258)             Sloth diet inferred from dung

Fourth sloth discovered                           Megalonyx                                                  Original paper (1929)

                                                                Jefferson’s Megalonyx


Use this part to access resources about both of the giant ground sloths known from Brazil.

Glossotherium robustus                                   Eremotherium laurillardi

Original description of M. robustus        What giant beasts carved out these South American mega-tunnels? (both)

Glossotherium summary - Wikipedia     Range of E. laurillardi - Wikipedia

Fossil evidence of frequency                 E. laurillardi: The Panamerican late Pleistocence megatheriid sloth 

range of hearing independent of            Carbon idsotope in tooth enamel of Pleistocene mega mammals-abstract

body size

Use this part to access resources about each of the giant ground sloths known from the southeastern US.

Eremotherium laurillardi                                                                                               Megalonyx jeffersoni

Eremotherium - Wikipedia, scroll down to E. laurillardi                                                Megalonyx jeffersoni fossils

Ground sloths of South Carolina - includes                                                                  Giant Ground Sloth Megalonyx

Eremotherium, Megalonyx, and Paramylodon species - scientific paper

Eremotherium lauillardi: the panamerican late Pleistocene megatheriid sloth -

scientific paper            

 Brett Dooley Website Maintained since 2011 Last Updated July 2019