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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. Taxonomy
Puerto Rican sloth [6] Acratocnus odontrigonus: Puerto Rico [6] Most recent remains dated to 1738–1500 BCE. However this date was not obtained directly from bones, nor calibrated, and the remains could be older. [7] Haitian Macaya sloth [6] Acratocnus ye: Hispaniola: Most recent remains dated to 8540–1590 BCE (uncalibrated age). [2] Cuban ...
[7] [4] [note 1] The earliest evidence suggesting the presence of sloths in the Caribbean is a partial femur from the Early Oligocene of Puerto Rico. [8] Other pre-Pleistocene fossil remains include Imagocnus from the Early Miocene of Cuba, [9] and an indeterminate species from the Late Miocene of the Dominican Republic. [10]
Acratocnus odontrigonus, a sloth known only from Puerto Rico. Acratocnus major, described on the basis of somewhat larger Puerto Rican sloth bones, simply represents large individuals of A. odontrigonus. [32] A small sloth femur has been found at an early Oligocene site in southwestern Puerto Rico. It is not sufficiently diagnostic to permit ...
Ground sloths had dispersed into the Caribbean already by 31 million years ago, as evidenced by a femur found in Puerto Rico. [34] During the Miocene, sloths diversified, with the major families of sloths appearing during this period, [34] with diversity waxing and waning over the course of the Miocene. Megalonychid and mylodontid sloths had ...
Lesser Puerto Rican ground sloth (Acratocnus odontrigonus) - The lesser Puerto Rican ground sloth became extinct approximately 3000–4000 years ago. Puerto Rican caracara ( Caracara latebrosus ) Puerto Rican plate-tooth ( Elasmodontomys obliquus ) - The Puerto Rican plate-tooth, giant hutia or Puerto Rican paca became extinct approximately in ...
This is a list of the mammal species recorded in Puerto Rico. These are the mammal species in Puerto Rico, of which one is critically endangered, none are endangered, two are vulnerable, and none are near threatened. Two of the species listed for Puerto Rico are considered to be extinct. [1]
Megalocnus ("great sloth" in Greek) is a genus of extinct ground sloths that were native to Cuba during the Pleistocene and Holocene epochs. They were among the largest of the Caribbean sloths (Megalocnidae), with individuals estimated to have weighed up to 270 kg (595 lbs) [1] to 200 kg (440 lbs), around the size of a black bear when alive. [2]