Acratocnus fossil map
Where fossils of Acratocnus have been found, shown on the Earth as it looked about 0 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 0 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

| Group | Early mammals |
|---|---|
| Lived | 2.58 million years ago to the present (Gelasian to Holocene) |
| Periods | Quaternary |
| Family | Megalonychidae |
| Named by | Anthony 1916 |
| Fossil records | 20 occurrences at 9 locations (PBDB) |
| Found in | Cuba, Dominican Republic, Puerto Rico |
| Rock formations | txn:43596 |
About Acratocnus
Acratocnus is an extinct genus of Caribbean sloths that were found on Cuba, Hispaniola (today the Dominican Republic and Haiti), and Puerto Rico during the Late Pleistocene and early-mid Holocene.
Text in “About” is quoted from the Wikipedia article Acratocnus (revision 1380854887), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q965019.