Prepoplanops

Prepoplanops is an extinct genus of ground sloth of the family Megatheriidae. It lived in the Miocene around 18 to 16 million years ago of what is now Argentina. The only known species is Prepoplanops boleadorensis.^[1]

Prepoplanops Temporal range: Early Miocene (Santacrucian-Friasian) ~18.3–15.97 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Calcaneum of Prepoplanops boleadorensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Pilosa
Family:	†Megatheriidae
Subfamily:	†Planopsinae
Genus:	†Prepoplanops Carlini et al. 2013
Species:	†P. boleadorensis
Binomial name
†Prepoplanops boleadorensis Carlini et al. 2013

Description

Prepoplanops was a medium-sized ground sloth, about 1.5 to 2 meters long.^[1]

Classification

Prepoplanops was a representative of the Planopsinae, a subfamily of megatheriids that lived during the Miocene. In particular, it appears that Prepoplanops was an intermediate form between Planops and Prepotherium.

Prepoplanops boleadorensis was first described in 2013, based on fossil remains found in Argentina's Santa Cruz Province in the Cerro Boleadoras Formation.^[2]

Below is a phylogenetic tree of the Megatheriidae, based on the work of Varela and colleagues (2019).^[3]

Megatheriidae	Megatheriinae Eremotherium Megatherium Proeremotherium Pyramiodontherium Anisodontherium Diabolotherium Megathericulus Planopsinae Planops Prepotherium Prepoplanops