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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 →

Acratocnus
Image: H. Gregory McDonald, CC BY 4.0, via Wikimedia Commons
GroupEarly mammals
Lived2.58 million years ago to the present (Gelasian to Holocene)
PeriodsQuaternary
FamilyMegalonychidae
Named byAnthony 1916
Fossil records20 occurrences at 9 locations (PBDB)
Found inCuba, Dominican Republic, Puerto Rico
Rock formationstxn: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.

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