Thinobadistes is an extinct genus of ground sloth of the family Mylodontidae endemic to North America during the Miocene-Pliocene epochs (Hemphillian).

It is then reasonable to presume that the ancestors of Thinobadistes island-hopped across the Central American Seaway from South America, where sloths in general first evolved.

[4] The fossil was made as the holotype (USNM 3335) of Thinobadistes segnis by Oliver P. Hay in 1919, who believed it was a close relative of Gnathopsis.

[6][5] Some of the younger and larger fossils were put into a new species, Thinobadistes wetzeli, which was also based on an astragalus found in Hemphillian deposits of the Withlacoochee River, Florida.

The second named species, T. wetzeli, is from the lower early Hemphillian and has a wider distribution, with 2 sites containing fossils near the Withlacoochee River, Florida, 1 at Tyner Farm also in Alachua County,[6][5] and material of a juvenile found in the Texas Panhandle.