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.

Description

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

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.

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

MegatheriidaeMegatheriinae Eremotherium Megatherium Proeremotherium Pyramiodontherium Anisodontherium Diabolotherium Megathericulus Planopsinae Planops Prepotherium Prepoplanops
MegatheriinaeEremotherium Megatherium Proeremotherium Pyramiodontherium Anisodontherium Diabolotherium Megathericulus
Eremotherium Megatherium Proeremotherium Pyramiodontherium Anisodontherium
Eremotherium Megatherium Proeremotherium Pyramiodontherium
Eremotherium Megatherium Proeremotherium
Eremotherium Megatherium
Eremotherium
Megatherium
Proeremotherium
Pyramiodontherium
Anisodontherium
Diabolotherium Megathericulus
Diabolotherium
Megathericulus
PlanopsinaePlanops Prepotherium Prepoplanops
Planops Prepotherium
Planops
Prepotherium
Prepoplanops