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Agriotherium

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376: 417:. They had longer legs and shorter faces than other bears, and were more lightly built. Their wide, short jaws could generate enormous bite force. It is not certain how this force was used by the living animal; a study designed to determine how the genus fed discovered that among living bears, the lowest bite force belongs to the predatory polar bear, which feeds largely on blubber, and the highest bite force belongs to the giant panda, a herbivore which uses it to crush 125: 107: 386:
measured around 2 metres (7 ft) in body length and weighed up to 750 kilograms (1,650 lb), making it larger than most living bears; however, mass estimates vary, with further studies presenting a lower mass estimate of 317–540 kilograms (699–1,190 lb). Along with other large bears such
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did not have the limb strength or speed needed for active hunting, either by ambush or by chasing down prey. It also did not show the long claws and increased forelimb strength typical of mammals that dig for food. These very large bears may have specialized on a combination of grazing, eating fruit
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Oldfield, C. C.; McHenry, C. R.; Clausen, P. D.; Chamoli, U.; Parr, W. C. H.; Stynder, D. D.; Wroe, S. (2012). "Finite element analysis of ursid cranial mechanics and the prediction of feeding behaviour in the extinct giant Agriotherium africanum".
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that ate a lot of plant material. Though its teeth do not show adaptations for a carnivorous diet, isotope evidence suggests it did eat a significant amount of animal material, similar to some populations of modern
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Petter, G.; Thomas, H. (1986). "Les Agriotheriinae (Mammalia, Carnivora)néogènes de l'Ancien Monde presence du genre Indarctos dans la faune de Menacer (ex−Marceau), Algérie".
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Ogino, Shintaro, Naoko Egi, and Masanaru Takai. "New species of Agriotherium (Mammalia, Carnivora) from the late Miocene to early Pliocene of central Myanmar."
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Dalquest, W. W. (1986). "Lower Jaw and Dentition of the Hemphillian Bear, Agriotherium (Ursidae), with the Description of a New Species".
496:, which it lived alongside in Texas, as evidenced by fossil deposits at Coffee Ranch. Its name was made from the Greek for "wild beast". 1959: 1954: 961: 1964: 1140: 879: 846: 656: 1989: 1984: 671:
Burness, G. P., Diamond, J., & Flannery, T. (2001). Dinosaurs, dragons, and dwarfs: The evolution of maximal body size.
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Very large size would have been necessary to steal and defend kills in environments dominated by some of the most powerful
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and invertebrate food in season, and intimidating predators away from carcasses in order to scavenge meat and bone marrow.
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Ogino, Shintaro; Egi, Naoko; Zin-Maung-Maung-Thein; Thaung-Htike; Takai, Masanaru (2011-08-10).
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that eat grasses but evolved from non-grazing ancestors, and in bone-crushing scavengers, like
1525: 924: 875: 842: 811: 766: 712: 652: 481:, with whom it shared territory in both Afro-Eurasia and North America, and the bone-cracking 1078:
Sorkin, B. (2006). "Ecomorphology of the giant short-faced bears Agriotherium and Arctodus".
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The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals
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Miller, W. E.; Carranza-Castañeda, O.; Carranza-Castaneda, Oscar (1996).
679: 530: 451: 441: 393: 364: 156: 79: 74: 59: 54: 44: 792:"Ecomorphology of the giant short-faced bears Agriotherium and Arctodus" 1908: 1636: 1457: 1395: 1160: 1041: 1006: 549: 486: 482: 421:. Shortened jaws with high bite forces are found in other mammals like 344: 332: 328: 94: 69: 106: 1172: 841:. Bloomington, Indiana: University of Indiana Press. pp. 53–54. 541: 523: 418: 348: 166: 146: 1852: 1032: 1015: 998: 553: 545: 540:
ranged widely; fossils of four or more species have been found in
509: 374: 352: 1895: 1016:"Agriotherium schneideri from the Hemphillian of Central Mexico" 729:
Sorkin, B. (2006). Ecomorphology of the giant short-faced bears
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Analysis of the teeth, jaw, and tooth wear patterns identifies
351:. This long-lived genus persisted from at least ~11.6–2.5 403:, and an extinct subspecies of the modern polar bear 1817: 1807: 1797: 1787: 1777: 1767: 1757: 1747: 1737: 1727: 1717: 1707: 1678: 1668: 1658: 1648: 1619: 1596: 1586: 1576: 1541: 1531: 1521: 1496: 1486: 1476: 1453: 1443: 1433: 1423: 1391: 1381: 1370: 1351: 1341: 1330: 1315: 1305: 1295: 1284: 1269: 1259: 1249: 1239: 1229: 1218: 1206: 232: 1865: 1692: 1635: 1610: 1563: 1510: 1467: 1414: 1405: 1369: 1329: 1283: 1217: 1205: 413:was among the largest known terrestrial members of 759:"Researchers Chew Over a Prehistoric Bear's Diet" 673:Proceedings of the National Academy of Sciences, 870:. New York: Columbia University Press. p.  1141: 8: 1853: 1700: 1641: 1569: 1507: 1411: 1214: 1148: 1134: 1126: 651:. London: Marshall Editions. p. 217. 472:mammals that have ever lived, such as the 105: 20: 1031: 903:. Suture Zones and Geodynamic Processes. 746:https://doi.org/10.1080/08912960500476366 866:The Big Cats and their fossil relatives 576: 689: 687: 680:https://doi.org/10.1073/pnas.251548698 623:"Fossilworks: Agriotherium africanum" 7: 490:and the massive feliform sabertooth 962:Cleveland Museum of Natural History 456:a fossil bear widely accepted as a 355:Materials from the late-surviving 14: 1970:Cenozoic mammals of North America 945:; Garcia, Nuria (December 2007). 709:10.1111/j.1469-7998.2011.00862.x 123: 901:Journal of Asian Earth Sciences 585:Journal of Asian Earth Sciences 359:in Africa have suggested that 297:(Falconer & Cautley, 1836) 1: 1995:Fossil taxa described in 1837 1975:Prehistoric carnivoran genera 1071:10.1016/s0016-6995(86)80055-9 921:10.1016/j.jseaes.2011.05.017 757:Switek, Brian (2012-10-29). 504:Sites and age of specimens: 248:Falconer & Cautley, 1836 790:Sorkin, B. (January 2006). 598:"Fossilworks: Agriotherium" 331:whose fossils are found in 2016: 1960:Cenozoic mammals of Africa 1955:Cenozoic mammals of Europe 1843:Category:Prehistoric bears 1114:Illustration at ScienceArt 363:died out during the early 1839: 1703: 1644: 1572: 1167: 1092:10.1080/08912960500476366 808:10.1080/08912960500476366 258: 253: 231: 224: 120:Scientific classification 118: 113: 104: 23: 1965:Cenozoic mammals of Asia 837:Antón, Mauricio (2013). 647:Palmer, D., ed. (1999). 564:known to have colonized 406:Ursus maritimus tyrannus 313:Jiangzuo and Flynn, 2019 1990:Pleistocene extinctions 1985:Pleistocene carnivorans 1673:Helarctos sinomalayanus 522:Vialette, Haute Loire, 327:is an extinct genus of 242:Agriotherium sivalensis 1159:members of the family 380: 16:Extinct genus of bears 1917:Paleobiology Database 862:Turner, Alan (1997). 587:42.3 (2011): 408-414. 378: 1020:Journal of Mammalogy 987:Journal of Mammalogy 739:Historical Biology, 391:, short-faced bears 371:Description and diet 265:(Ogino et al., 2011) 1792:U. sackdillingensis 1063:1986Geobi..19..573P 913:2011JAESc..42..408O 678:(25), 14518–14523. 500:Fossil distribution 1683:Melursus theobaldi 1546:A. wulingshanensis 1119:2019-02-17 at the 1080:Historical Biology 796:Historical Biology 697:Journal of Zoology 566:sub-Saharan Africa 381: 281:(Qiu et al., 1991) 1980:Pleistocene bears 1932: 1931: 1859:Taxon identifiers 1850: 1849: 1835: 1834: 1831: 1830: 1631: 1630: 1559: 1558: 1555: 1554: 1365: 1364: 560:. It is the only 320: 319: 314: 306: 298: 290: 282: 274: 266: 220: 2007: 1925: 1924: 1912: 1911: 1899: 1898: 1886: 1885: 1884: 1854: 1819: 1809: 1799: 1789: 1779: 1769: 1759: 1749: 1739: 1729: 1719: 1709: 1701: 1680: 1670: 1660: 1650: 1642: 1621: 1598: 1588: 1578: 1570: 1543: 1533: 1523: 1508: 1498: 1488: 1478: 1455: 1445: 1435: 1425: 1412: 1393: 1383: 1372: 1353: 1343: 1332: 1317: 1307: 1297: 1286: 1271: 1261: 1251: 1241: 1231: 1220: 1215: 1208: 1150: 1143: 1136: 1127: 1103: 1074: 1045: 1035: 1010: 973: 972: 970: 969: 951: 943:Howell, F. Clark 939: 933: 932: 892: 886: 885: 869: 859: 853: 852: 834: 828: 827: 787: 781: 780: 778: 777: 754: 748: 727: 721: 720: 691: 682: 669: 663: 662: 644: 638: 637: 635: 633: 619: 613: 612: 610: 608: 594: 588: 581: 515:Lang. E Quarry, 508:Venta del Moro, 478:Amphimachairodus 452:Hemicyon ursinus 339:-aged strata of 312: 304: 296: 289:(Lydekker, 1878) 288: 280: 272: 264: 236:Ursus sivalensis 234: 218: 211: 198: 128: 127: 109: 99: 36: 29:Temporal range: 21: 2015: 2014: 2010: 2009: 2008: 2006: 2005: 2004: 1935: 1934: 1933: 1928: 1920: 1915: 1907: 1902: 1894: 1889: 1880: 1879: 1874: 1861: 1851: 1846: 1827: 1688: 1627: 1606: 1551: 1506: 1463: 1401: 1361: 1325: 1279: 1201: 1163: 1154: 1121:Wayback Machine 1110: 1077: 1048: 1033:10.2307/1382830 1013: 999:10.2307/1381124 984: 981: 976: 967: 965: 949: 941: 940: 936: 894: 893: 889: 882: 861: 860: 856: 849: 836: 835: 831: 789: 788: 784: 775: 773: 756: 755: 751: 728: 724: 693: 692: 685: 670: 666: 659: 646: 645: 641: 631: 629: 627:fossilworks.org 621: 620: 616: 606: 604: 602:fossilworks.org 596: 595: 591: 582: 578: 574: 502: 373: 315: 307: 299: 291: 286:A. palaeindicus 283: 275: 273:(Gervais, 1859) 267: 262:A. myanmarensis 249: 246: 238: 217: 209: 196: 122: 114:Views of skull 100: 98: 97: 92: 87: 82: 77: 72: 67: 62: 57: 52: 47: 42: 31: 30: 27: 17: 12: 11: 5: 2013: 2011: 2003: 2002: 1997: 1992: 1987: 1982: 1977: 1972: 1967: 1962: 1957: 1952: 1950:Pliocene bears 1947: 1937: 1936: 1930: 1929: 1927: 1926: 1913: 1900: 1887: 1871: 1869: 1863: 1862: 1857: 1848: 1847: 1840: 1837: 1836: 1833: 1832: 1829: 1828: 1826: 1825: 1815: 1805: 1795: 1785: 1775: 1765: 1755: 1745: 1735: 1725: 1715: 1704: 1698: 1690: 1689: 1687: 1686: 1676: 1666: 1656: 1645: 1639: 1633: 1632: 1629: 1628: 1618: 1616: 1608: 1607: 1605: 1604: 1594: 1584: 1573: 1567: 1561: 1560: 1557: 1556: 1553: 1552: 1550: 1549: 1539: 1529: 1518: 1516: 1505: 1504: 1494: 1484: 1473: 1471: 1465: 1464: 1462: 1461: 1451: 1441: 1431: 1420: 1418: 1409: 1403: 1402: 1400: 1399: 1389: 1378: 1376: 1367: 1366: 1363: 1362: 1360: 1359: 1349: 1338: 1336: 1334:Phoberocyonini 1327: 1326: 1324: 1323: 1313: 1303: 1292: 1290: 1281: 1280: 1278: 1277: 1267: 1257: 1247: 1237: 1226: 1224: 1212: 1203: 1202: 1200: 1199: 1193: 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1810: 1800: 1790: 1780: 1770: 1760: 1750: 1742:U. ingressus 1740: 1730: 1720: 1712:U. deningeri 1710: 1693: 1681: 1671: 1661: 1651: 1622: 1611: 1599: 1591:Arctotherium 1589: 1579: 1565:Tremarctinae 1544: 1534: 1524: 1511: 1499: 1489: 1479: 1469:Ailuropodini 1456: 1446: 1436: 1428:Agriotherium 1427: 1426: 1394: 1384: 1354: 1344: 1318: 1308: 1298: 1272: 1262: 1252: 1242: 1234:Adelpharctos 1232: 1210:Hemicyoninae 1083: 1079: 1054: 1050: 1023: 1019: 990: 986: 966:. 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Retrieved 601: 592: 584: 579: 558:South Africa 538:Agriotherium 537: 536: 526:~3.2–2.5 Ma. 519:~5.3–3.6 Ma. 517:South Africa 503: 491: 485: 476: 467: 462:Agriotherium 461: 460:, show that 450: 438:Agriotherium 437: 435: 411:Agriotherium 410: 404: 400:Arctotherium 398: 392: 384:A. africanum 383: 382: 361:A. africanum 360: 357:A. africanum 356: 324:Agriotherium 323: 322: 321: 309: 302:A. africanum 301: 293: 285: 277: 269: 261: 259: 241: 240: 235: 226:Type species 219:Wagner, 1837 214:Agriotherium 213: 212: 25:Agriotherium 24: 18: 1812:U. spelaeus 1782:U. rossicus 1732:U. etruscus 1653:Aurorarctos 1601:Plionarctos 1491:Ailurarctos 1346:Phoberocyon 1288:Hemicyonini 1274:Phoberogale 1264:Filholictis 1244:Cephalogale 802:(1): 1–20. 744:(1), 1–20. 632:17 December 607:17 December 470:carnivorous 447:brown bears 431:borophagine 337:Pleistocene 1939:Categories 1762:U. minimus 1663:Protarctos 1613:Tremarctos 1536:A. microta 1513:Ailuropoda 1481:Agriarctos 1356:Plithocyon 1320:Zaragocyon 1254:Cyonarctos 1197:Caniformia 1195:Suborder: 968:2009-10-15 954:Kirtlandia 839:Sabertooth 776:2020-03-16 703:(2): 171. 572:References 310:A. hendeyi 270:A. insigne 1802:U. savini 1526:A. baconi 1448:Indarctos 1374:Ursavinae 1191:Carnivora 1171:Kingdom: 964:: 121–139 929:1367-9120 816:0891-2963 771:1059-1028 717:1469-7998 415:Carnivora 389:cave bear 177:Carnivora 143:Kingdom: 137:Eukaryota 1882:Q2333795 1876:Wikidata 1581:Arctodus 1386:Ballusia 1310:Hemicyon 1300:Dinocyon 1185:Mammalia 1179:Chordata 1177:Phylum: 1173:Animalia 1117:Archived 1100:85301983 1086:: 1–20. 824:85301983 735:Arctodus 531:Ethiopia 458:predator 442:omnivore 394:Arctodus 379:Mandible 365:Gelasian 335:through 254:Species 183:Family: 167:Mammalia 157:Chordata 153:Phylum: 147:Animalia 133:Domain: 1909:3240363 1896:4441515 1637:Ursinae 1458:Miomaci 1438:Huracan 1396:Ursavus 1189:Order: 1183:Class: 1161:Ursidae 1157:Extinct 1059:Bibcode 1051:Geobios 1042:1382830 1007:1381124 979:Sources 909:Bibcode 550:Myanmar 512:6.2 Ma. 487:Epicyon 387:as the 345:Eurasia 333:Miocene 206:Genus: 193:Tribe: 187:Ursidae 173:Order: 163:Class: 1098:  1040:  1005:  927:  878:  845:  822:  814:  769:  715:  655:  562:ursoid 556:, and 542:Europe 524:France 440:as an 433:dogs. 419:bamboo 349:Africa 347:, and 1922:41303 1695:Ursus 1096:S2CID 1038:JSTOR 1003:JSTOR 950:(PDF) 820:S2CID 763:Wired 554:China 546:India 510:Spain 483:canid 329:bears 1904:GBIF 925:ISSN 876:ISBN 843:ISBN 812:ISSN 767:ISSN 733:and 713:ISSN 653:ISBN 634:2021 609:2021 429:and 397:and 353:Mya. 239:(= † 40:PreꞒ 1891:EoL 1088:doi 1067:doi 1028:doi 995:doi 958:556 917:doi 872:201 804:doi 705:doi 701:286 1941:: 1919:: 1906:: 1893:: 1878:: 1094:. 1084:18 1082:. 1065:. 1055:19 1053:. 1036:. 1024:77 1022:. 1018:. 1001:. 991:67 989:. 960:. 956:. 952:. 923:. 915:. 905:42 899:. 874:. 818:. 810:. 800:18 798:. 794:. 765:. 761:. 741:18 737:. 711:. 699:. 686:^ 675:98 625:. 600:. 568:. 552:, 548:, 544:, 409:, 367:. 343:, 90:Pg 34:Ma 1818:† 1808:† 1798:† 1788:† 1778:† 1768:† 1758:† 1748:† 1738:† 1728:† 1718:† 1708:† 1679:† 1669:† 1659:† 1649:† 1620:† 1597:† 1587:† 1577:† 1542:† 1532:† 1522:† 1497:† 1487:† 1477:† 1454:† 1444:† 1434:† 1424:† 1392:† 1382:† 1371:† 1352:† 1342:† 1331:† 1316:† 1306:† 1296:† 1285:† 1270:† 1260:† 1250:† 1240:† 1230:† 1219:† 1207:† 1149:e 1142:t 1135:v 1102:. 1090:: 1073:. 1069:: 1061:: 1044:. 1030:: 1009:. 997:: 971:. 931:. 919:: 911:: 884:. 851:. 826:. 806:: 779:. 719:. 707:: 661:. 636:. 611:. 454:, 308:† 300:† 292:† 284:† 276:† 268:† 260:† 245:) 233:† 210:† 197:† 95:N 85:K 80:J 75:T 70:P 65:C 60:D 55:S 50:O 45:Ꞓ

Index

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PreꞒ

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Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Mammalia
Carnivora
Ursidae
Agriotheriini
Agriotherium
Type species
bears
Miocene
Pleistocene
North America
Eurasia

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