Knowledge (XXG)

Thecodontia

Source 📝

1701: 20: 2017: 1060: 1045: 1688: 1052: 1695: 85:
is Greek for "socket-tooth", referring to the fact that thecodont teeth were set in sockets in the jawbones; an archosaurian characteristic that was inherited by the dinosaurs. While the taxon Thecodontia is obsolete, the term
90:
remains in use as an anatomical description of teeth in bony sockets; in addition to species formerly in this group (such as crocodiles and dinosaurs), mammals also possess thecodont dentition, which evolved independently.
238:
attempted to define Thecodontia within a cladistic framework, containing crocodilians and haemothermata (mammals and birds), thus giving the old name to a new concept. All more recent cladistic studies (e.g.,
284:
Gauthier, J., 1986. Saurischian monophyly and the origin of birds. In: K. Padian, ed. The Origin of Birds and the Evolution of Flight. Memoirs California Academy of Sciences 8. pp. 1–55
247:. As the association of the name with the outdated concept proved to be very strong, it is now considered a historical term only, and its current usage has been abandoned. 227:(of uncertain placement), while retaining the other three suborders. This is the last major textbook that still recognizes the taxon Thecodontia, as it uses a traditional 53:
period. All of them were built somewhat like crocodiles but with shorter skulls, more erect pose and usually somewhat lighter. The group includes the ancestors of
342: 177:
was simply a catch-all term for any species that didn't fit in one of the other three sub-orders. Pseudosuchia as used in recent literature is a
305: 2041: 205: 2046: 288: 2061: 243:
1986) have confirmed that Thecodontia as construed by Gardiner is a polyphyletic taxon, the members of which are not united by any
114:
group (they include among their descendants animals that are not thecodonts), the term is no longer used as a formal name by most
38:(meaning 'socket-teeth'), now considered an obsolete taxonomic grouping, was formerly used to describe a diverse "order" of early 159: 300: 335: 1700: 2056: 169: 118:, but it can still be found in older (and even fairly recent) books as a convenient shorthand for the basal archosaurs. 235: 2020: 328: 2051: 1619: 1510: 1044: 994: 81:(an opening on each side of the skull between the eye sockets and the nostrils) and teeth in sockets. The name 1687: 943: 1694: 1059: 969: 1648: 1051: 154: 99: 1551: 69:
is still used as an anatomical description of the tooth morphology seen in these species and others.
439: 78: 1984: 853: 722: 666: 228: 200: 150: 95: 1091: 1078: 1012: 897: 803: 689: 650: 609: 569: 518: 501: 488: 451: 351: 240: 178: 164: 65:, as well as a number of extinct forms that did not give rise to any descendants. The term 1979: 1913: 1778: 1608: 1499: 1301: 1292: 1187: 1173: 831: 766: 750: 703: 538: 309: 214: 173:). Of these, only phytosaurs and aetosaurs constitute monophyletic groups, and the term 1994: 1573: 1478: 1428: 1337: 1203: 932: 908: 796: 711: 579: 559: 223: 115: 19: 2035: 1989: 1948: 1943: 1748: 1597: 1586: 1462: 1438: 1315: 1262: 1232: 1225: 1163: 1153: 984: 846: 839: 788: 739: 732: 681: 638: 589: 408: 134: 1969: 1810: 1768: 1758: 1738: 1637: 1418: 1344: 1239: 780: 673: 599: 528: 244: 146: 128: 111: 107: 1974: 1923: 1903: 1883: 1873: 1863: 1853: 1833: 1788: 1408: 1367: 1351: 1308: 1218: 1196: 1112: 958: 887: 817: 759: 218: 39: 315: 77:
Thecodonts are characterized by certain shared primitive features, such as the
1893: 1823: 1654: 1527: 1485: 1471: 1448: 1398: 1322: 1278: 1271: 1211: 1143: 1132: 1122: 1001: 824: 810: 773: 659: 624: 549: 424: 381: 210: 190: 98:" for any archosaur other than a crocodilian, a pterosaur, or a dinosaur (any 62: 1934: 1798: 1563: 1540: 1388: 1330: 1247: 918: 870: 696: 186: 182: 138: 58: 29: 375: 142: 54: 50: 24: 390: 306:
Five types of tooth implanting in non-mammals, including thecodont type
46: 42: 1843: 399: 369: 320: 103: 18: 1625: 194: 1716: 1076: 486: 362: 324: 153:
intended to be paraphyletic to all later archosaurs (see e.g.,
137:(early primitive forms, another paraphyletic assemblage), 28:, one of the aquatic and superficially crocodile-like 193:) that are more closely related to crocodilians than 110:
taxa as natural groups, and because thecodonts are a
94:
They constitute an evolutionary grade of animals, a "
1919: 1909: 1899: 1889: 1879: 1869: 1859: 1849: 1839: 1829: 1819: 1794: 1784: 1774: 1764: 1754: 1744: 1734: 1593: 1582: 1537: 1496: 1459: 1444: 1434: 1424: 1414: 1404: 1394: 1384: 1289: 1259: 1184: 1169: 1159: 1149: 1139: 1128: 1118: 1108: 981: 955: 929: 914: 904: 893: 883: 621: 605: 595: 585: 575: 565: 555: 545: 534: 524: 514: 1962: 1933: 1808: 1727: 1636: 1607: 1571: 1562: 1536: 1525: 1495: 1458: 1365: 1288: 1258: 1183: 1089: 1011: 980: 954: 928: 868: 749: 721: 649: 619: 499: 450: 423: 141:(large crocodile-like semi-aquatic animals), the 277:Gardiner, BG (1982). Tetrapod classification. 336: 8: 49:period and flourished until the end of the 1724: 1713: 1568: 1533: 1377: 1373: 1101: 1097: 1086: 1073: 876: 630: 507: 496: 483: 429: 420: 359: 343: 329: 321: 234:In his 1982 thesis on amniote phylogeny, 274:, John Wiley & Sons Inc (2nd ed.) 265:Vertebrate Paleontology and Evolution 206:Vertebrate Paleontology and Evolution 133:was divided into four suborders, the 126:Traditionally, the order Thecodontia 7: 209:(1988), replaces Pseudosuchia with 45:that first appeared in the latest 14: 312: (archived November 26, 2010) 2016: 2015: 1699: 1693: 1686: 1058: 1050: 1043: 267:, W. H. Freeman and Co. New York 221:), and the traditional category 217:and non-dinosaur, non-pterosaur 316:Dinosaurs of Rio grande do Sul. 189:, or all archosaurs (including 145:(armoured herbivores), and the 245:shared derived characteristics 1: 2042:Prehistoric reptile taxonomy 289:Stem Archosauria—TaxonSearch 272:Evolution of the Vertebrates 231:derived from that of Romer. 213:, Ornithosuchia (containing 170:Evolution of the Vertebrates 2047:Prehistoric tetrapod orders 2078: 279:Zool. J. Linn. Soc. London 16:Obsolete order of reptiles 2011: 1723: 1712: 1683: 1380: 1376: 1104: 1100: 1085: 1072: 1041: 879: 633: 510: 495: 482: 432: 419: 358: 301:Evolution Wiki: Thecodont 2062:Obsolete vertebrate taxa 102:archosaur). Because the 260:, Blackwell Science Ltd 258:Vertebrate Paleontology 229:Linnaean based taxonomy 160:Vertebrate Paleontology 32: 263:Carroll, R. L. 1988, 155:Alfred Sherwood Romer 22: 287:Sereno, P. C. 2005. 270:Colbert, E H. 1969, 256:Benton, M. J. 1997, 2057:Paraphyletic groups 79:antorbital fenestra 1985:Ichthyosauromorpha 1975:Drepanosauromorpha 104:cladistic paradigm 33: 2029: 2028: 2007: 2006: 2003: 2002: 1708: 1707: 1681: 1680: 1677: 1676: 1673: 1672: 1669: 1668: 1665: 1664: 1521: 1520: 1361: 1360: 1068: 1067: 1039: 1038: 1035: 1034: 1031: 1030: 864: 863: 854:Sharovipterygidae 723:Sharovipterygidae 667:Dinocephalosaurus 478: 477: 474: 473: 470: 469: 151:wastebasket taxon 132: 122:Taxonomic history 96:wastebasket taxon 2069: 2019: 2018: 1963:Possible members 1921: 1911: 1901: 1891: 1881: 1871: 1861: 1851: 1841: 1831: 1821: 1796: 1786: 1776: 1766: 1756: 1746: 1736: 1725: 1714: 1703: 1697: 1691: 1690: 1595: 1584: 1569: 1539: 1534: 1498: 1461: 1446: 1436: 1426: 1416: 1406: 1396: 1386: 1378: 1374: 1291: 1261: 1186: 1171: 1161: 1151: 1141: 1130: 1120: 1110: 1102: 1098: 1092:Archosauriformes 1087: 1079:Archosauriformes 1074: 1063: 1062: 1055: 1054: 1047: 1013:Archosauriformes 983: 957: 931: 916: 906: 898:Cryptovaranoides 895: 885: 877: 804:Langobardisaurus 690:Protanystropheus 651:Trachelosauridae 631: 623: 610:Vritramimosaurus 607: 597: 587: 577: 570:Mecistotrachelos 567: 557: 547: 536: 526: 519:Aenigmastropheus 516: 508: 502:Archosauromorpha 497: 489:Archosauromorpha 484: 452:Archosauromorpha 430: 421: 414: 413: 360: 352:Archosauromorpha 345: 338: 331: 322: 241:Jacques Gauthier 179:stem-based taxon 165:Edwin H. Colbert 127: 106:only recognises 2077: 2076: 2072: 2071: 2070: 2068: 2067: 2066: 2052:Archosauriforms 2032: 2031: 2030: 2025: 1999: 1980:Kuehneosauridae 1958: 1929: 1914:Vjushkovisaurus 1804: 1779:Protecovasaurus 1719: 1704: 1685: 1661: 1632: 1620:Avemetatarsalia 1609:Avemetatarsalia 1603: 1558: 1530: 1517: 1511:Proterochampsia 1500:Proterochampsia 1491: 1454: 1370: 1357: 1302:Bharitalasuchus 1293:Erythrosuchidae 1284: 1254: 1188:Proterosuchidae 1179: 1174:Syntomiprosopus 1094: 1081: 1064: 1057: 1049: 1027: 1007: 976: 950: 924: 873: 860: 832:Sclerostropheus 767:Augustaburiania 751:Tanystropheidae 745: 717: 704:Sclerostropheus 645: 627: 615: 539:Elachistosuchus 504: 491: 466: 446: 415: 365: 364: 354: 349: 310:Wayback Machine 297: 253: 215:Ornithosuchidae 124: 116:paleontologists 75: 17: 12: 11: 5: 2075: 2073: 2065: 2064: 2059: 2054: 2049: 2044: 2034: 2033: 2027: 2026: 2024: 2023: 2012: 2009: 2008: 2005: 2004: 2001: 2000: 1998: 1997: 1995:Thalattosauria 1992: 1987: 1982: 1977: 1972: 1966: 1964: 1960: 1959: 1957: 1956: 1951: 1946: 1940: 1938: 1931: 1930: 1928: 1927: 1917: 1907: 1897: 1887: 1877: 1867: 1857: 1847: 1837: 1827: 1816: 1814: 1806: 1805: 1803: 1802: 1792: 1782: 1772: 1762: 1752: 1742: 1731: 1729: 1721: 1720: 1718:Related topics 1717: 1710: 1709: 1706: 1705: 1684: 1682: 1679: 1678: 1675: 1674: 1671: 1670: 1667: 1666: 1663: 1662: 1660: 1659: 1658: 1657: 1651: 1642: 1640: 1634: 1633: 1631: 1630: 1629: 1628: 1622: 1613: 1611: 1605: 1604: 1602: 1601: 1591: 1579: 1577: 1574:Incertae sedis 1566: 1560: 1559: 1557: 1556: 1555: 1554: 1545: 1543: 1531: 1526: 1523: 1522: 1519: 1518: 1516: 1515: 1514: 1513: 1504: 1502: 1493: 1492: 1490: 1489: 1482: 1479:Halazhaisuchus 1475: 1467: 1465: 1456: 1455: 1453: 1452: 1442: 1432: 1429:Marcianosuchus 1422: 1412: 1402: 1392: 1381: 1371: 1366: 1363: 1362: 1359: 1358: 1356: 1355: 1348: 1341: 1338:Guchengosuchus 1334: 1327: 1319: 1312: 1305: 1297: 1295: 1286: 1285: 1283: 1282: 1275: 1267: 1265: 1256: 1255: 1253: 1252: 1244: 1236: 1229: 1222: 1215: 1208: 1204:Chasmatosuchus 1200: 1192: 1190: 1181: 1180: 1178: 1177: 1167: 1157: 1147: 1137: 1126: 1116: 1105: 1095: 1090: 1083: 1082: 1077: 1070: 1069: 1066: 1065: 1042: 1040: 1037: 1036: 1033: 1032: 1029: 1028: 1026: 1025: 1024: 1023: 1017: 1015: 1009: 1008: 1006: 1005: 998: 990: 988: 978: 977: 975: 974: 973: 972: 963: 961: 952: 951: 949: 948: 947: 946: 944:Allokotosauria 937: 935: 933:Allokotosauria 926: 925: 923: 922: 912: 909:Tasmaniosaurus 902: 891: 880: 874: 869: 866: 865: 862: 861: 859: 858: 850: 843: 836: 828: 821: 814: 807: 800: 797:Gwyneddosaurus 793: 785: 777: 770: 763: 755: 753: 747: 746: 744: 743: 736: 728: 726: 719: 718: 716: 715: 712:Trachelosaurus 708: 700: 693: 686: 678: 670: 663: 655: 653: 647: 646: 644: 643: 634: 628: 620: 617: 616: 614: 613: 603: 593: 583: 580:Prolacertoides 573: 563: 560:Malutinisuchus 553: 543: 532: 522: 511: 505: 500: 493: 492: 487: 480: 479: 476: 475: 472: 471: 468: 467: 465: 464: 463: 462: 456: 454: 448: 447: 445: 444: 443: 442: 433: 427: 417: 416: 412: 411: 402: 393: 384: 378: 372: 363: 356: 355: 350: 348: 347: 340: 333: 325: 319: 318: 313: 303: 296: 295:External links 293: 292: 291: 285: 282: 275: 268: 261: 252: 249: 236:Brian Gardiner 224:incertae sedis 203:, in his book 201:Robert Carroll 181:that includes 123: 120: 74: 71: 15: 13: 10: 9: 6: 4: 3: 2: 2074: 2063: 2060: 2058: 2055: 2053: 2050: 2048: 2045: 2043: 2040: 2039: 2037: 2022: 2014: 2013: 2010: 1996: 1993: 1991: 1990:Sauropterygia 1988: 1986: 1983: 1981: 1978: 1976: 1973: 1971: 1968: 1967: 1965: 1961: 1955: 1952: 1950: 1949:Protorosauria 1947: 1945: 1944:Proterosuchia 1942: 1941: 1939: 1936: 1932: 1926: 1925: 1918: 1916: 1915: 1908: 1906: 1905: 1898: 1896: 1895: 1888: 1886: 1885: 1878: 1876: 1875: 1868: 1866: 1865: 1858: 1856: 1855: 1848: 1846: 1845: 1838: 1836: 1835: 1828: 1826: 1825: 1818: 1817: 1815: 1813: 1812: 1807: 1801: 1800: 1793: 1791: 1790: 1783: 1781: 1780: 1773: 1771: 1770: 1763: 1761: 1760: 1753: 1751: 1750: 1749:Lucianosaurus 1743: 1741: 1740: 1733: 1732: 1730: 1726: 1722: 1715: 1711: 1702: 1698: 1696: 1689: 1656: 1652: 1650: 1646: 1645: 1644: 1643: 1641: 1639: 1635: 1627: 1623: 1621: 1617: 1616: 1615: 1614: 1612: 1610: 1606: 1600: 1599: 1592: 1589: 1588: 1587:Sikannisuchus 1581: 1580: 1578: 1576: 1575: 1570: 1567: 1565: 1561: 1553: 1549: 1548: 1547: 1546: 1544: 1542: 1535: 1532: 1529: 1524: 1512: 1508: 1507: 1506: 1505: 1503: 1501: 1494: 1488: 1487: 1483: 1481: 1480: 1476: 1474: 1473: 1469: 1468: 1466: 1464: 1463:Euparkeriidae 1457: 1451: 1450: 1443: 1441: 1440: 1439:Polymorphodon 1433: 1431: 1430: 1423: 1421: 1420: 1413: 1411: 1410: 1403: 1401: 1400: 1393: 1391: 1390: 1383: 1382: 1379: 1375: 1372: 1369: 1364: 1354: 1353: 1349: 1347: 1346: 1342: 1340: 1339: 1335: 1333: 1332: 1328: 1325: 1324: 1320: 1318: 1317: 1316:Erythrosuchus 1313: 1311: 1310: 1306: 1304: 1303: 1299: 1298: 1296: 1294: 1287: 1281: 1280: 1276: 1274: 1273: 1269: 1268: 1266: 1264: 1263:Protopyknosia 1257: 1250: 1249: 1245: 1242: 1241: 1237: 1235: 1234: 1233:Samsarasuchus 1230: 1228: 1227: 1226:Proterosuchus 1223: 1221: 1220: 1216: 1214: 1213: 1209: 1206: 1205: 1201: 1199: 1198: 1194: 1193: 1191: 1189: 1182: 1176: 1175: 1168: 1166: 1165: 1164:Sarmatosuchus 1158: 1156: 1155: 1154:Koilamasuchus 1148: 1146: 1145: 1138: 1135: 1134: 1127: 1125: 1124: 1117: 1115: 1114: 1107: 1106: 1103: 1099: 1096: 1093: 1088: 1084: 1080: 1075: 1071: 1061: 1056: 1053: 1046: 1021: 1020: 1019: 1018: 1016: 1014: 1010: 1004: 1003: 999: 997: 996: 992: 991: 989: 986: 985:Prolacertidae 979: 971: 970:Rhynchosauria 967: 966: 965: 964: 962: 960: 959:Rhynchosauria 953: 945: 941: 940: 939: 938: 936: 934: 927: 921: 920: 913: 911: 910: 903: 900: 899: 892: 890: 889: 882: 881: 878: 875: 872: 867: 856: 855: 851: 849: 848: 847:Tanytrachelos 844: 842: 841: 840:Tanystropheus 837: 834: 833: 829: 827: 826: 822: 820: 819: 815: 813: 812: 808: 806: 805: 801: 799: 798: 794: 791: 790: 789:Gracilicollum 786: 783: 782: 778: 776: 775: 771: 769: 768: 764: 762: 761: 757: 756: 754: 752: 748: 742: 741: 740:Sharovipteryx 737: 735: 734: 730: 729: 727: 724: 720: 714: 713: 709: 706: 705: 701: 699: 698: 694: 692: 691: 687: 684: 683: 682:Gracilicollum 679: 676: 675: 671: 669: 668: 664: 662: 661: 657: 656: 654: 652: 648: 641: 640: 639:Jesairosaurus 636: 635: 632: 629: 626: 618: 612: 611: 604: 602: 601: 594: 592: 591: 590:Protorosaurus 584: 582: 581: 574: 572: 571: 564: 562: 561: 554: 552: 551: 544: 541: 540: 533: 531: 530: 523: 521: 520: 513: 512: 509: 506: 503: 498: 494: 490: 485: 481: 460: 459: 458: 457: 455: 453: 449: 441: 437: 436: 435: 434: 431: 428: 426: 422: 418: 410: 409:Archelosauria 406: 403: 401: 397: 394: 392: 388: 385: 383: 379: 377: 373: 371: 367: 366: 361: 357: 353: 346: 341: 339: 334: 332: 327: 326: 323: 317: 314: 311: 307: 304: 302: 299: 298: 294: 290: 286: 283: 280: 276: 273: 269: 266: 262: 259: 255: 254: 250: 248: 246: 242: 237: 232: 230: 226: 225: 220: 216: 212: 208: 207: 202: 198: 196: 192: 188: 184: 180: 176: 172: 171: 166: 162: 161: 156: 152: 148: 144: 140: 136: 135:Proterosuchia 130: 121: 119: 117: 113: 109: 105: 101: 97: 92: 89: 84: 80: 72: 70: 68: 64: 60: 56: 52: 48: 44: 41: 37: 31: 27: 26: 21: 1970:Choristodera 1953: 1935:Paraphyletic 1922: 1912: 1902: 1892: 1882: 1872: 1862: 1852: 1842: 1832: 1822: 1811:Nomina dubia 1809: 1797: 1787: 1777: 1769:Palaeosaurus 1767: 1759:Tecovasaurus 1757: 1747: 1739:Crosbysaurus 1737: 1692: 1655:crocodilians 1649:Pseudosuchia 1638:Pseudosuchia 1596: 1585: 1572: 1484: 1477: 1470: 1447: 1437: 1427: 1419:Litorosuchus 1417: 1407: 1397: 1387: 1350: 1345:Shansisuchus 1343: 1336: 1329: 1321: 1314: 1307: 1300: 1277: 1270: 1246: 1240:Tsylmosuchus 1238: 1231: 1224: 1217: 1210: 1202: 1195: 1172: 1162: 1152: 1142: 1131: 1121: 1111: 1048: 1000: 993: 917: 907: 896: 886: 852: 845: 838: 830: 823: 816: 809: 802: 795: 787: 781:Fuyuansaurus 779: 772: 765: 758: 738: 731: 710: 702: 695: 688: 680: 674:Fuyuansaurus 672: 665: 658: 637: 608: 600:Rhombopholis 598: 588: 578: 568: 558: 548: 537: 529:Czatkowiella 527: 517: 404: 395: 386: 281:74: 207–232. 278: 271: 264: 257: 233: 222: 204: 199: 191:crocodilians 175:Pseudosuchia 174: 168: 158: 147:Pseudosuchia 125: 112:paraphyletic 108:monophyletic 93: 87: 82: 76: 66: 63:crocodilians 40:archosaurian 35: 34: 23: 1954:Thecodontia 1924:Wangisuchus 1904:Microcnemus 1884:Fenhosuchus 1874:Exilisuchus 1864:Collilongus 1854:Blomosuchus 1834:Ankistrodon 1789:Uatchitodon 1564:Archosauria 1552:Phytosauria 1541:Phytosauria 1409:Heteropelta 1368:Eucrocopoda 1352:Uralosaurus 1309:Chalishevia 1219:Jaikosuchus 1197:Archosaurus 1113:Antarctanax 888:Boreopricea 818:Macrocnemus 760:Amotosaurus 219:Ornithodira 139:Phytosauria 36:Thecodontia 2036:Categories 1894:Megacnemus 1824:Albisaurus 1728:Tooth taxa 1528:Crurotarsi 1486:Osmolskina 1472:Euparkeria 1449:Vancleavea 1399:Dorosuchus 1323:Fugusuchus 1279:Triopticus 1272:Kranosaura 1212:Gamosaurus 1144:Kalisuchus 1133:Eorasaurus 1123:Cuyosuchus 1022:see below↓ 1002:Prolacerta 995:Kadimakara 825:Raibliania 811:Luxisaurus 774:Cosesaurus 660:Austronaga 625:Tanysauria 550:Elessaurus 461:see below↓ 440:Sauropsida 425:Sauropsida 382:Sauropsida 251:References 211:Rauisuchia 187:archosaurs 143:Aetosauria 73:Definition 59:pterosaurs 30:phytosaurs 1799:Zanclodon 1653:includes 1624:includes 1389:Asperoris 1331:Garjainia 1248:Vonhuenia 919:Teyujagua 871:Crocopoda 697:Pectodens 368:Kingdom: 183:crocodile 88:thecodont 83:thecodont 67:thecodont 55:dinosaurs 2021:Category 391:Diapsida 376:Chordata 374:Phylum: 370:Animalia 51:Triassic 43:reptiles 25:Rutiodon 380:Class: 308:at the 47:Permian 1937:groups 1844:Avipes 733:Ozimek 400:Sauria 185:-line 131:, 1859 61:, and 1626:birds 405:Clade 396:Clade 387:Clade 195:birds 100:basal 1647:see 1618:see 1598:Smok 1550:see 1509:see 968:see 942:see 438:see 163:and 149:, a 129:Owen 167:'s 157:'s 2038:: 407:: 398:: 389:: 197:. 57:, 1920:† 1910:† 1900:† 1890:† 1880:† 1870:† 1860:† 1850:† 1840:† 1830:† 1820:† 1795:† 1785:† 1775:† 1765:† 1755:† 1745:† 1735:† 1594:† 1590:? 1583:† 1538:† 1497:† 1460:† 1445:† 1435:† 1425:† 1415:† 1405:† 1395:† 1385:† 1326:? 1290:† 1260:† 1251:? 1243:? 1207:? 1185:† 1170:† 1160:† 1150:† 1140:† 1136:? 1129:† 1119:† 1109:† 987:? 982:† 956:† 930:† 915:† 905:† 901:? 894:† 884:† 857:? 835:? 792:? 784:? 725:? 707:? 685:? 677:? 642:? 622:† 606:† 596:† 586:† 576:† 566:† 556:† 546:† 542:? 535:† 525:† 515:† 344:e 337:t 330:v

Index


Rutiodon
phytosaurs
archosaurian
reptiles
Permian
Triassic
dinosaurs
pterosaurs
crocodilians
antorbital fenestra
wastebasket taxon
basal
cladistic paradigm
monophyletic
paraphyletic
paleontologists
Owen
Proterosuchia
Phytosauria
Aetosauria
Pseudosuchia
wastebasket taxon
Alfred Sherwood Romer
Vertebrate Paleontology
Edwin H. Colbert
Evolution of the Vertebrates
stem-based taxon
crocodile
archosaurs

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.