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Squamosal bone

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bones form the cheek series of the skull. The bone forms an ancestral component of the dermal roof and is typically thin compared to other skull bones.
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bones of the skull articulate to form the jaw joint. The squamosal bone lies anterior to the quadrate bone.
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skull showing the location of major dermal bones, including the squamosal bone (Sq).
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Allis, Edward Phelps (1919). "On the homologies of the squamosal bone of fishes".
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Parentheses denote bones that receive a different name in particular clades
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to the temporal series and otic notch, and is bordered anteriorly by the
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Italics denote neomorphic bones present only in particular clades
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In many mammals, including humans, the squamosal fuses with the
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bones. The squamosal is bordered anteroventrally by the
320: 162:, and hence referred to as a dentary-squamosal jaw. 420: 86:. Posteriorly, the squamosal articulates with the 68:. In fishes, it is also called the pterotic bone. 27:Skull bone in most reptiles, amphibians and birds 1717: 667: 580: 1700: 1643: 1211: 406: 297:: CS1 maint: multiple names: authors list ( 361:. University of Chicago Press. p. 772. 265:Romer, Alfred Sherwood, 1894-1973. (1978). 1707: 1693: 1650: 1636: 677:(Supraoccipital+Exoccipital+Basioccipital) 413: 399: 374:"Quadroarticular vs Dentary-Squamosal jaw" 301:) CS1 maint: numeric names: authors list ( 267:The vertebrate body : shorter version 126: 935: 44:Evolution of mammalian auditory ossicles 29: 121: 105: 14: 1718: 353: 1365: 1146: 934: 439: 394: 376:. Memorial University of Newfoundland 229: 71:In most tetrapods, the squamosal and 1659: 1602: 1480:) (Tibiale+Intermedium+Centrale 3+4) 1137: 371: 316: 314: 312: 24: 1356: 25: 1752: 701:(Squamosal+Petrosal+Ectotympanic) 309: 1663: 1606: 321:Homberger, Dominique G. (2004). 365: 347: 258: 223: 13: 1: 216: 199:ossicles of the mammalian ear 1736:Musculoskeletal system stubs 1679:. You can help Knowledge by 1622:. You can help Knowledge by 1616:human musculoskeletal system 7: 689:(Parasphenoid+Basisphenoid) 10: 1757: 1658: 1601: 182:, then referred to as the 165: 41: 1585: 1538: 1503: 1466: 1428: 1405: 1374: 1321: 1288: 1257: 1109: 1061: 1052: 1020: 954: 945: 941: 930: 879: 814: 770: 712: 601: 461: 452: 448: 440: 435: 359:Osteology of the Reptiles 205:bone evolves to form the 193:bone evolves to form the 1741:Vertebrate anatomy stubs 683:(Exoccipital+Opisthotic) 372:Carr, Steven M. (2005). 78:The squamosal bone lies 1675:–related article is a 1444:Intermediate cuneiform 590:(Postparietal+Tabular) 39: 323:Vertebrate dissection 244:10.1002/ar.1090170202 232:The Anatomical Record 98:and ventrally by the 33: 936:Postcranial skeleton 695:(Prootic+Opisthotic) 122:Anatomy in synapsids 106:Function in reptiles 1492:(Distal tarsal 4+5) 56:bone found in most 1731:Vertebrate anatomy 1673:vertebrate anatomy 974:Cervical vertebrae 40: 1688: 1687: 1631: 1630: 1599: 1598: 1581: 1580: 1577: 1576: 1534: 1533: 1530: 1529: 1526: 1525: 1499: 1498: 1467:Composite tarsals 1451:Lateral cuneiform 1449:Distal tarsal 3 ( 1442:Distal tarsal 2 ( 1435:Distal tarsal 1 ( 1284: 1283: 1280: 1279: 1253: 1252: 1239:Distal carpal 4 ( 1232:Distal carpal 3 ( 1225:Distal carpal 2 ( 1218:Distal carpal 1 ( 1048: 1047: 926: 925: 922: 921: 810: 809: 708: 707: 597: 596: 201:. Similarly, the 184:squama temporalis 134:In non-mammalian 110:In reptiles, the 34:A schematic of a 16:(Redirected from 1748: 1709: 1702: 1695: 1667: 1660: 1652: 1645: 1638: 1610: 1603: 1437:Medial cuneiform 1375:Proximal tarsals 1372: 1371: 1363: 1362: 1354: 1353: 1209: 1208: 1181:Lateral centrale 1144: 1143: 1135: 1134: 1059: 1058: 989:Caudal vertebrae 979:Dorsal vertebrae 952: 951: 943: 942: 932: 931: 687:Parabasisphenoid 665: 664: 578: 577: 459: 458: 450: 449: 437: 436: 415: 408: 401: 392: 391: 385: 384: 382: 381: 369: 363: 362: 351: 345: 344: 318: 307: 306: 296: 288: 262: 256: 255: 227: 189:In mammals, the 21: 1756: 1755: 1751: 1750: 1749: 1747: 1746: 1745: 1716: 1715: 1714: 1713: 1657: 1656: 1600: 1595: 1573: 1564:Ossified tendon 1522: 1495: 1462: 1459:Distal tarsal 5 1456:Distal tarsal 4 1424: 1401: 1352: 1317: 1276: 1249: 1246:Distal carpal 5 1207: 1191:Medial centrale 1133: 1105: 1063:Pectoral girdle 1044: 1016: 1008: 937: 918: 875: 806: 766: 704: 668:Composite bones 663: 593: 581:Composite bones 576: 444: 431: 419: 389: 388: 379: 377: 370: 366: 352: 348: 333: 319: 310: 290: 289: 277: 263: 259: 228: 224: 219: 168: 132: 124: 108: 46: 28: 23: 22: 15: 12: 11: 5: 1754: 1744: 1743: 1738: 1733: 1728: 1712: 1711: 1704: 1697: 1689: 1686: 1685: 1668: 1655: 1654: 1647: 1640: 1632: 1629: 1628: 1611: 1597: 1596: 1594: 1593: 1590: 1586: 1583: 1582: 1579: 1578: 1575: 1574: 1572: 1571: 1566: 1561: 1556: 1542: 1540: 1536: 1535: 1532: 1531: 1528: 1527: 1524: 1523: 1521: 1520: 1515: 1510: 1504: 1501: 1500: 1497: 1496: 1494: 1493: 1487: 1486:(Centrale 1+2) 1481: 1470: 1468: 1464: 1463: 1461: 1460: 1457: 1454: 1447: 1440: 1432: 1430: 1429:Distal tarsals 1426: 1425: 1423: 1422: 1419: 1416: 1413: 1409: 1407: 1403: 1402: 1400: 1399: 1389: 1384: 1378: 1376: 1369: 1360: 1351: 1350: 1343: 1338: 1333: 1327: 1325: 1319: 1318: 1316: 1315: 1310: 1305: 1300: 1294: 1292: 1286: 1285: 1282: 1281: 1278: 1277: 1275: 1274: 1269: 1264: 1258: 1255: 1254: 1251: 1250: 1248: 1247: 1244: 1237: 1230: 1223: 1215: 1213: 1212:Distal carpals 1206: 1205: 1198: 1193: 1188: 1178: 1173: 1163: 1152: 1150: 1141: 1132: 1131: 1126: 1121: 1115: 1113: 1107: 1106: 1104: 1103: 1098: 1093: 1088: 1083: 1078: 1067: 1065: 1056: 1050: 1049: 1046: 1045: 1043: 1042: 1037: 1032: 1026: 1024: 1018: 1017: 1015: 1014: 1009: 1007: 1006: 999: 991: 986: 981: 976: 971: 966: 960: 958: 949: 939: 938: 928: 927: 924: 923: 920: 919: 917: 916: 911: 906: 901: 896: 891: 885: 883: 877: 876: 874: 873: 868: 863: 856: 851: 846: 841: 831: 820: 818: 812: 811: 808: 807: 805: 804: 799: 797:Sclerotic ring 794: 792:Extracolumella 789: 782: 771: 768: 767: 765: 764: 759: 749: 744: 737: 732: 722: 716: 714: 710: 709: 706: 705: 703: 702: 696: 690: 684: 678: 671: 669: 662: 661: 659:Supraoccipital 656: 651: 646: 641: 639:Orbitosphenoid 636: 631: 629:Laterosphenoid 626: 621: 616: 611: 605: 603: 599: 598: 595: 594: 592: 591: 584: 582: 575: 574: 569: 564: 559: 554: 547: 542: 537: 532: 527: 522: 517: 512: 507: 502: 497: 487: 480: 473: 467: 465: 456: 446: 445: 433: 432: 418: 417: 410: 403: 395: 387: 386: 364: 346: 331: 308: 275: 257: 221: 220: 218: 215: 176:auditory bulla 167: 164: 144:quadrate bones 131: 127:Non-mammalian 125: 123: 120: 107: 104: 26: 9: 6: 4: 3: 2: 1753: 1742: 1739: 1737: 1734: 1732: 1729: 1727: 1724: 1723: 1721: 1710: 1705: 1703: 1698: 1696: 1691: 1690: 1684: 1682: 1678: 1674: 1669: 1666: 1662: 1661: 1653: 1648: 1646: 1641: 1639: 1634: 1633: 1627: 1625: 1621: 1618:article is a 1617: 1612: 1609: 1605: 1604: 1591: 1588: 1587: 1584: 1570: 1567: 1565: 1562: 1560: 1557: 1555: 1554: 1549: 1548: 1544: 1543: 1541: 1539:Miscellaneous 1537: 1519: 1516: 1514: 1511: 1509: 1506: 1505: 1502: 1491: 1488: 1485: 1482: 1479: 1475: 1472: 1471: 1469: 1465: 1458: 1455: 1452: 1448: 1445: 1441: 1438: 1434: 1433: 1431: 1427: 1420: 1417: 1414: 1411: 1410: 1408: 1404: 1397: 1393: 1390: 1388: 1385: 1383: 1380: 1379: 1377: 1373: 1370: 1368: 1364: 1361: 1359: 1355: 1349: 1348: 1344: 1342: 1339: 1337: 1334: 1332: 1329: 1328: 1326: 1324: 1320: 1314: 1313:Epipubic bone 1311: 1309: 1306: 1304: 1301: 1299: 1296: 1295: 1293: 1291: 1290:Pelvic girdle 1287: 1273: 1270: 1268: 1265: 1263: 1260: 1259: 1256: 1245: 1242: 1238: 1235: 1231: 1228: 1224: 1221: 1217: 1216: 1214: 1210: 1204: 1203: 1199: 1197: 1194: 1192: 1189: 1186: 1182: 1179: 1177: 1174: 1171: 1167: 1164: 1161: 1157: 1154: 1153: 1151: 1149: 1145: 1142: 1140: 1136: 1130: 1127: 1125: 1124:Radius (bone) 1122: 1120: 1117: 1116: 1114: 1112: 1108: 1102: 1099: 1097: 1094: 1092: 1091:Interclavicle 1089: 1087: 1084: 1082: 1079: 1076: 1072: 1069: 1068: 1066: 1064: 1060: 1057: 1055: 1051: 1041: 1038: 1036: 1033: 1031: 1028: 1027: 1025: 1023: 1019: 1013: 1012:Haemal arches 1010: 1005: 1004: 1000: 998: 997: 993: 992: 990: 987: 985: 982: 980: 977: 975: 972: 970: 967: 965: 962: 961: 959: 957: 953: 950: 948: 944: 940: 933: 929: 915: 912: 910: 907: 905: 902: 900: 897: 895: 892: 890: 887: 886: 884: 882: 878: 872: 869: 867: 864: 862: 861: 857: 855: 852: 850: 847: 845: 842: 839: 835: 832: 829: 825: 822: 821: 819: 817: 813: 803: 802:Wormian bones 800: 798: 795: 793: 790: 788: 787: 783: 780: 776: 773: 772: 769: 763: 760: 757: 753: 750: 748: 745: 743: 742: 738: 736: 733: 730: 726: 723: 721: 720:Ectopterygoid 718: 717: 715: 711: 700: 697: 694: 691: 688: 685: 682: 679: 676: 673: 672: 670: 666: 660: 657: 655: 652: 650: 647: 645: 642: 640: 637: 635: 632: 630: 627: 625: 622: 620: 617: 615: 612: 610: 609:Basioccipital 607: 606: 604: 600: 589: 588:Interparietal 586: 585: 583: 579: 573: 570: 568: 567:Supratemporal 565: 563: 560: 558: 555: 553: 552: 548: 546: 545:Quadratojugal 543: 541: 538: 536: 533: 531: 528: 526: 523: 521: 518: 516: 513: 511: 508: 506: 503: 501: 498: 495: 491: 488: 486: 485: 484:Intertemporal 481: 479: 478: 474: 472: 469: 468: 466: 464: 460: 457: 455: 451: 447: 443: 438: 434: 430: 427: 423: 416: 411: 409: 404: 402: 397: 396: 393: 375: 368: 360: 356: 355:Roemer, A. S. 350: 342: 338: 334: 332:0-03-022522-1 328: 324: 317: 315: 313: 304: 300: 294: 286: 282: 278: 276:0-7216-7682-0 272: 268: 261: 253: 249: 245: 241: 237: 233: 226: 222: 214: 212: 208: 204: 200: 197:, one of the 196: 192: 187: 185: 181: 180:temporal bone 177: 173: 172:periotic bone 163: 161: 160:temporal bone 157: 153: 149: 145: 141: 137: 130: 119: 117: 113: 103: 101: 100:quadratojugal 97: 93: 89: 85: 81: 76: 74: 73:quadratojugal 69: 67: 63: 59: 55: 51: 45: 37: 32: 19: 1681:expanding it 1670: 1624:expanding it 1613: 1551: 1545: 1345: 1200: 1054:Appendicular 1030:Cervical rib 1001: 994: 914:Tympanohyoid 858: 854:Prearticular 828:Ectotympanic 786:Entotympanic 784: 739: 725:Epipterygoid 654:Sphenethmoid 644:Parasphenoid 614:Basisphenoid 557:Septomaxilla 549: 530:Postparietal 482: 475: 378:. Retrieved 367: 358: 349: 322: 266: 260: 238:(2): 72–87. 235: 231: 225: 188: 178:to form the 169: 158:part of the 133: 109: 77: 70: 49: 47: 1387:Intermedium 1176:Intermedium 894:Ceratohyoid 729:Alisphenoid 681:Otoccipital 624:Exoccipital 525:Postorbital 520:Postfrontal 84:postorbital 1720:Categories 1569:Osteoderms 1508:Metatarsal 1474:Astragalus 1421:Centrale 4 1418:Centrale 3 1415:Centrale 2 1412:Centrale 1 1262:Metacarpal 1170:Triquetral 1040:Caudal rib 1035:Dorsal rib 909:Thyrohyoid 904:Stylohyoid 871:Surangular 860:Predentary 634:Opisthotic 540:Premaxilla 535:Prefrontal 477:Internasal 463:Skull roof 380:2018-04-09 217:References 148:therapsids 62:amphibians 42:See also: 1559:Gastralia 1553:Baubellum 1513:Phalanges 1484:Navicular 1406:Centralia 1396:Calcaneum 1267:Phalanges 1227:Trapezoid 1220:Trapezium 1081:Cleithrum 1003:Pygostyle 956:Vertebrae 889:Basihyoid 834:Articular 775:Columella 747:Pterygoid 675:Occipital 602:Braincase 562:Squamosal 494:Zygomatic 293:cite book 203:articular 140:articular 136:synapsids 129:synapsids 116:articular 92:pterygoid 50:squamosal 18:Squamosal 1392:Fibulare 1323:Hindlimb 1234:Capitate 1196:Pisiform 1160:Scaphoid 1111:Forelimb 1086:Coracoid 1071:Clavicle 899:Epihyoid 866:Splenial 844:Coronoid 816:Mandible 752:Quadrate 741:Prevomer 735:Palatine 699:Temporal 693:Petrosal 515:Parietal 500:Lacrimal 429:skeleton 426:tetrapod 357:(1956). 341:53074665 252:85000711 191:quadrate 174:and the 156:squamous 154:and the 112:quadrate 88:quadrate 58:reptiles 36:synapsid 1547:Baculum 1382:Tibiale 1347:Patella 1298:Ischium 1202:Pteroid 1156:Radiale 1119:Humerus 1101:Sternum 1096:Scapula 1075:Furcula 849:Dentary 838:Malleus 824:Angular 649:Prootic 619:Ethmoid 572:Tabular 551:Rostral 505:Maxilla 471:Frontal 454:Cranium 424:in the 285:3345587 213:bone). 211:dentary 207:malleus 166:Mammals 152:dentary 80:ventral 1518:Ungual 1490:Cuboid 1367:Tarsus 1341:Fibula 1272:Ungual 1241:Hamate 1185:Lunate 1166:Ulnare 1148:Carpus 996:Coccyx 984:Sacrum 779:Stapes 713:Palate 339:  329:  283:  273:  250:  146:. In 64:, and 1726:Skull 1671:This 1614:This 1478:Talus 1336:Tibia 1331:Femur 1308:Pubis 1303:Ilium 1139:Manus 964:Atlas 947:Axial 881:Hyoid 762:Vomer 756:Incus 510:Nasal 490:Jugal 442:Skull 422:Bones 248:S2CID 195:incus 96:jugal 66:birds 54:skull 52:is a 1677:stub 1620:stub 1129:Ulna 1022:Ribs 969:Axis 337:OCLC 327:ISBN 303:link 299:link 281:OCLC 271:ISBN 142:and 114:and 90:and 48:The 1358:Pes 240:doi 1722:: 335:. 311:^ 295:}} 291:{{ 279:. 246:. 236:17 234:. 186:. 102:. 60:, 1708:e 1701:t 1694:v 1683:. 1651:e 1644:t 1637:v 1626:. 1550:/ 1476:( 1453:) 1446:) 1439:) 1398:) 1394:( 1243:) 1236:) 1229:) 1222:) 1187:) 1183:( 1172:) 1168:( 1162:) 1158:( 1077:) 1073:( 840:) 836:( 830:) 826:( 781:) 777:( 758:) 754:( 731:) 727:( 496:) 492:( 414:e 407:t 400:v 383:. 343:. 305:) 287:. 254:. 242:: 20:)

Index

Squamosal

synapsid
Evolution of mammalian auditory ossicles
skull
reptiles
amphibians
birds
quadratojugal
ventral
postorbital
quadrate
pterygoid
jugal
quadratojugal
quadrate
articular
synapsids
synapsids
articular
quadrate bones
therapsids
dentary
squamous
temporal bone
periotic bone
auditory bulla
temporal bone
squama temporalis
quadrate

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