the lesser short-faced bear (Arctodus pristinus) and the giant short-faced bear (Arctodus simus). Of these species, A. simus was larger, is known from more...

Middle Pleistocene, both Arctodus and Arctotherium gave way to new forms; Arctodus pristinus gave way to the huge Arctodus simus, which inhabited a pan-continental...

 240. ISBN 978-0-85112-235-9. Christiansen, P. (1999). "What size were Arctodus simus and Ursus spelaeus (Carnivora: Ursidae)?". Annales Zoologici Fennici...

Subfamily Tremarctinae Genus Arctodus (short-faced bear)† (2.2–0.012 Mya) A. pristinus (lesser short-faced bear) (2.2–0.3 Mya) A. simus (giant short-faced bear)...

angustidens, Arctodus underwent the opposite transformation, transitioning from the medium-sized A. pristinus to the gigantic A. simus by the end of...

polecat (Mustela eversmanii; extirpated) (C) Various bear (Ursidae) spp. Arctodus simus (C) Florida spectacled bear (Tremarctos floridanus) (C) South American...

lived during the same period as the giant and lesser short-faced bears (Arctodus simus and A. pristinus, respectively) and the Florida spectacled bear (Tremarctos...

Tremarctinae (short-faced bears) – including the giant short-faced bear (Arctodus simus). The only surviving member of the group is the spectacled bear (Tremarctos...

 217. ISBN 1-84028-152-9. Per Christiansen (1999). "What size were Arctodus simus and Ursus spelaeus (Carnivora: Ursidae)?". Annales Zoologici Fennici...

solitary Arctodus an unlikely impediment to expansion. Indeed, new dates establish an extended co-existence of humans and megafauna such as Arctodus across...