Soibelzon, Leopoldo H.; Schubert, Blaine W. (2011). "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 Paleontology. 85 (1): 69–75. doi:10.1666/10-037.1. hdl:11336/104215. S2CID129585554.
Soibelzon, Leopoldo H.; Schubert, Blaine W. (2011). "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 Paleontology. 85 (1): 69–75. doi:10.1666/10-037.1. hdl:11336/104215. S2CID129585554.
Soibelzon, Leopoldo H.; Schubert, Blaine W. (2011). "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 Paleontology. 85 (1): 69–75. doi:10.1666/10-037.1. hdl:11336/104215. S2CID129585554.