![]() Mid Wisconsin: McKittrick (Schultz 1937) U-Bar Cave (Harris 1987). Late Rancholabrean: Big Bear (Morgan and Lucas 2005). 1996).Įarly Rancholabrean: Albuquerque Gravel Pits (Morgan and Lucas 1996) Lake SanĪgustín (Morgan and Lucas 2005) Oso Cave (Richards et al. Rancholabrean: Bitter Springs Playa (Jefferson 2014) Keams Canyon (Richards et al. Irvingtonian: Anza-Borrego (Shaw and Cox 2006) Elsinore: Microtus/Mammuthus (Pajak et al. Tremarctos is unrecorded from the state.Īrctodus hung on until the end of the Pleistocene Fiedel (2009) gives The localities (apparently the Isleta Caves andĬonkling Cavern) appear to actually pertain to Arctodus simus. Kurtén and Anderson (1980) mapped two localities for Tremarctos floridanus Giant Short-faced Bear specimen from U-Bar Cave. Of the head of the femur: 68.5 mm for Arctodus and 36.5 mm for UrsusĪmericanus. Some idea of size can be seen from the medial-lateral measurement Proximal femur of Ursus americanus (left) and Arctodus simus Identified only from one of the two sites.įig. 2 it has been listed in both, but apparently was It also is not clear at this point whether the site involved was Isleta Cave No. ![]() Specimen cannot be found and apparently never returned. The record from the Isleta Caves was based on an identification by Kurtén, but the Sheets as 12,650 ± 350 BP at Lubbock Lake, in the Texas Panhandle. Kurtén and Anderson (1980) gave terminal dates for occurrence south of the ice Kurtén concluded that it was "by far the most powerful predator in the Rostral breadth that suggested carnivory. The skull was convergent upon those of the great cats, with a short, but very wide, Terrestrial movement but not adaptation for climbing or digging. He suggested that the skeleton indicates adaptation to relatively fast Simus was noted by Kurtén (1967) as an exceptionally long-limbed bear, with theĭifference being especially great for the hind limb, which is notably longer than theįorelimb. Arctotherium simum, Tremarctotherium simum. ScienceDaily.† Arctodus simus (Cope 1879)-Giant Short-faced "Prehistoric Bears Ate Everything And Anything, Just Like Modern Cousins". ![]() Synonymies and reidentifications of North American fossil mammals. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). ![]() Journal of Paleontology (Paleontological Society) 85 (1): 69–75. "The Largest Known Bear, Arctotherium angustidens, from the Early Pleistocene Pampean Region of Argentina: With a Discussion of Size and Diet Trends in Bears". Journal of Vertebrate Paleontology 30 (1): 262–275. "Demythologizing Arctodus simus, the ‘short-faced’". Some authors also suggest that the short-faced bear was omnivorous much like many modern bears. ![]() The short-faced bear was most probably a carnivore, as analysis of its bones showed high concentrations of nitrogen-15, which is an isotope accumulated by carnivores. The genus Arctodus was described by Joseph Leidy in 1854. Their closest living relative is the spectacled bear of the genus Tremarctos. Short-faced bears were part of the bear subfamily Tremarctinae. It was similar in shape to modern grizzly bears, although they are not related to the Arctodus genus. The short-faced bear could weigh more than 900 kilograms, which would make it the second-largest known bear after its South American relative Arctotherium. ![]()
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