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Alwalkeria

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Chatterjee, S. 1987. A new theropod dinosaur from India with remarks on the Gondwana-Laurasia connection in the Late Cretaceous. In: McKenzie, G.D. (Ed.). Gondwana Six: Stratigraphy, Sedimentology, and Paleontology. Geophysical Monograph 41. Washington, D.C.: American Geophysical Union. Pp.
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Remes, K. and Rauhut, O. W. M. 2005. The oldest Indian dinosaur Alwalkeria maleriensis Chatterjee revised: a chimera including remains of a basal saurischian; p. 218 in Kellner, A. W . A., Henriques, D .D. R. and Rodrigues, T. (eds.), II Congresso Latino-Americano de Paleontologie de
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Chatterjee revised: a chimera including remains of a basal saurischian. in Kellner, Henriques and Rodrigues (eds). II Congresso Latino-Americano de Paleontologia de Vertebrados, Boletim de Resumos. Museu Nacional, Rio de Janeiro.
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A diagnosis is a statement of the anatomical features of an organism (or group) that collectively distinguish it from all other organisms. Some, but not all, of the features in a diagnosis are also autapomorphies. An
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R. N. Martínez and O. A. Alcober. 2009. A basal sauropodomorph (Dinosauria: Saurischia) from the Ischigualasto Formation (Triassic, Carnian) and the early evolution of Sauropodomorpha. PLoS ONE 4(2 (e4397)):1-12
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Agnolín, F.L. (2017). "Estudio de los Dinosauromorpha (Reptilia, Archosauria) de la Formación Chañares (Triásico Superior), Provincia de la Rioja, Argentina. Sus implicancias en el origen de los Dinosaurios".
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Langer, M.C. 2004. Basal Saurischia. In: Weishampel, D.B., Dodson, P., & Osmolska, H. (Eds.). The Dinosauria (2nd Edition). Berkeley: University of California Press. Pp. 25–46.
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Langer, M.C. 2004. Basal Saurischia. In: Weishampel, D.B., Dodson, P., & Osmolska, H. (Eds.). The Dinosauria (2nd Edition). Berkeley: University of California Press. Pp. 25–46.
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is indeed valid on the basis of an unusual morphology of its femur and an astragalus with a conservative morphology more similar to that of basal dinosaurs.
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R. S. Loyal, A. Khosla, and A. Sahni. 1996. Gondwanan dinosaurs of India: affinities and palaeobiogeography. Memoirs of the Queensland Museum 39(3):627-638
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Chatterjee, S. 1987. A new theropod dinosaur from India with remarks on the Gondwana-Laurasia connection in the Late Cretaceous. In: McKenzie, G.D. (Ed.).
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Fraser, N.C., Padian, K., Walkden, G.M., & Davis, A.L.M. 2002. Basal dinosauriform remains from Britain and the diagnosis of the Dinosauria.
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are clearly dinosaurian, however, with the latter possessing saurischian characteristics. In 2011, Novas and colleagues argued that
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Paul, 1988. Predatory dinosaurs of the world. Simon and Schuster, New York. A New York Academy of Sciences Book. 464 pp.
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in the upper jaw, meaning that the teeth are differently shaped depending on their position in the jaw. Similarly to
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Norman, D.B. 1990. Problematic Theropods: Coelurosaurs. In: Weishampel, D.B., Dodson, P. & Osmolska, H. (Eds.).
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being proportionally wider than almost any other known dinosaur, and there is a very large articulation between the
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would have measured around 1.5 metres (4.9 ft) long and weighed up to 2–5 kilograms (4.4–11.0 lb).
2119: 986:. Vertebrate Paleobiology and Paleoanthropology. Cham: Springer International Publishing. pp. 181–226. 903:"New dinosaur species from the Upper Triassic Upper Maleri and Lower Dharmaram formations of central India" 784: 1154: 2108: 2158: 135: 2126: 621:. The current scientific consensus is that this genus, or at least its hindlimb, does indeed occupy a 2307: 1294: 783:
period, approximately 235 to 228 million years ago. The specimen is housed in the collection of the
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suggest it may have held a similar position in the dinosaur family tree. However, the position of
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has been interpreted as being the site of an ancient lake or river. Material of the prosauropods
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is incomplete and consists of parts of the front ends of the upper and lower jaws, 28 incomplete
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bones of the upper jaw. Other similarities in the skull of the two animals also link them on
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have been found in the Maleri Formation, as well as intermediate prosauropod remains, and
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Gondwana Six: Stratigraphy, Sedimentology, and Paleontology. Geophysical Monograph 41
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is a distinctive anatomical feature that is unique to a given organism or group.
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Earth and Environmental Science Transactions of the Royal Society of Edinburgh
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is limited, the spacing and shape of the teeth strongly resemble those of
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was created in 1994 by Chatterjee and Ben Creisler: the specific name
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was formerly disputed, with one analysis finding it within the order
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is about 4 centimeters long (1.5 in). Although material of
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is the only named carnivorous dinosaur species from this locality.
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Vertebrados. Boletim de Resumos. Museu Nacional, Rio de Janeiro.
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can be distinguished based on the following characteristics:
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agreed with this classification. Paul (1988) understood
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to be a chimera, with the anterior skull referable to a
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D Phil. Thesis, Facultad de Ciencias Naturales y Museo
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an excavation is present in the bases of the dorsal
317: 879:Remes and Rauhut, 2005. The oldest Indian dinosaur 326: 722:unique among basal dinosaurs, such as its lack of 2279: 1471: 1074:Sereno, P.C. 1999. The evolution of dinosaurs. 595:as a link between herrerasaurids and the genus 578: 1356: 1196: 1182: 1052: 1050: 125:Holotype saurischian femur in multiple views 1806: 746: 563:, which suggests that the jaws were from an 980:"The Age of Dinosaurs in the Land of Gonds" 949:. Princeton University Press. p. 102. 1189: 1175: 1125:(Plesiosauria), new names for preoccupied 1117:Chatterjee, S. & Creisler, B.S. 1994. 1047: 984:Biological Consequences of Plate Tectonics 977: 858:(Plesiosauria), new names for preoccupied 850:Chatterjee, S. & Creisler, B.S. 1994. 828: 116: 1251: 459: 291: 834: 371: 2280: 946:The Princeton Field Guide to Dinosaurs 2174: 2173: 1208: 1170: 583:Chatterjee 1987 originally described 528: 942: 794: 587:as a basal theropod. In 1996, Loyal 897:, Fernando E.; Ezcurra, Martín D.; 509:, a gap separates the teeth of the 13: 1135:Journal of Vertebrate Paleontology 868:Journal of Vertebrate Paleontology 704:the presence of a highly expanded 673:Distinguishing anatomical features 639:analysis, but its similarities to 14: 2329: 2303:Dinosaurs of India and Madagascar 1148: 2154: 2153: 2125: 2118: 2112: 2107: 2101: 424:In 2005, Rauhut and Remes found 307: 134: 41: 2318:Taxa named by Sankar Chatterjee 2293:Late Triassic dinosaurs of Asia 1107: 1094: 1081: 1068: 1059: 1038: 741: 685:According to Chatterjee (1987) 417:, in southern India, where its 1029: 1016: 971: 936: 927: 901:, Sankar; Kutty, T.S. (2011). 887: 873: 844: 775:that was deposited during the 567:with a varied diet, including 455: 1: 2313:Fossil taxa described in 1994 822: 1133:Chatterjee and Small, 1989. 866:Chatterjee and Small, 1989. 785:Indian Statistical Institute 718:Several features would make 579:Classification and phylogeny 7: 992:10.1007/978-3-030-49753-8_8 978:Chatterjee, Sankar (2020). 751:The only known specimen of 635:has not been included in a 601:, and hence assigned it to 346:; "for Alick Walker") is a 10: 2334: 1198:Avemetatarsalia / Pan-Aves 617:and considered it a basal 613:was too primitive to be a 491:(ankle bone). The partial 296:Alwalkeria size comparison 16:Extinct genus of dinosaurs 2182: 2138: 2099: 2048: 2022: 2013: 1968: 1928: 1916: 1847: 1836: 1802: 1791: 1714: 1655: 1642: 1593: 1589: 1578: 1547: 1483: 1467: 1456: 1400: 1371: 1367: 1352: 1333: 1305: 1287: 1278: 1260: 1247: 1204: 943:Paul, Gregory S. (2016). 921:10.1017/S1755691011020093 759:Valley locality from the 747:Provenance and occurrence 605:based on features of the 468:The only known specimen, 272: 265: 247: 240: 131:Scientific classification 129: 124: 115: 23: 1129:Chatterjee, 1987, and 881:Alwalkeria maleriensis 862:Chatterjee, 1987, and 669:was a basal theropod. 575:, and plant material. 479:from all parts of the 465: 413:is a reference to the 297: 254:Alwalkeria maleriensis 2260:Paleobiology Database 755:was recovered in the 463: 387:in 1987, in honor of 379:was originally named 295: 728:mandibular symphysis 381:Walkeria maleriensis 372:Discovery and naming 653:, but basal to the 233:A. maleriensis 529:Dentition and diet 466: 298: 279:Chatterjee, 1987 ( 260:(Chatterjee, 1987) 2275: 2274: 2247:Open Tree of Life 2176:Taxon identifiers 2167: 2166: 2134: 2133: 2097: 2096: 2093: 2092: 2089: 2088: 2085: 2084: 2081: 2080: 2077: 2076: 2009: 2008: 1832: 1831: 1787: 1786: 1783: 1782: 1574: 1573: 1570: 1569: 1452: 1451: 1348: 1347: 1344: 1343: 1329: 1328: 1325: 1324: 1001:978-3-030-49752-1 956:978-1-78684-190-2 795:Fauna and habitat 714:is very prominent 533:The holotype had 385:Sankar Chatterjee 360:remains from the 290: 289: 284: 221: 2325: 2308:Fossils of India 2268: 2267: 2255: 2254: 2242: 2241: 2229: 2228: 2216: 2215: 2203: 2202: 2201: 2171: 2170: 2157: 2156: 2129: 2123: 2122: 2116: 2111: 2105: 2025: 2020: 2019: 1926: 1925: 1919: 1904: 1893: 1883: 1873: 1863: 1853: 1845: 1844: 1809: 1804: 1803: 1800: 1799: 1716:Sulcimentisauria 1653: 1652: 1645: 1630: 1619: 1609: 1599: 1591: 1590: 1587: 1586: 1481: 1480: 1476:Pterosauromorpha 1474: 1469: 1468: 1465: 1464: 1403: 1388: 1377: 1369: 1368: 1365: 1364: 1354: 1353: 1295:Archosauromorpha 1285: 1284: 1280:Archosauromorpha 1258: 1257: 1249: 1248: 1242: 1241: 1206: 1205: 1191: 1184: 1177: 1168: 1167: 1161:Dinosaurier-Info 1121:(Theropoda) and 1102: 1098: 1092: 1085: 1079: 1072: 1066: 1063: 1057: 1054: 1045: 1042: 1036: 1033: 1027: 1020: 1014: 1013: 975: 969: 968: 940: 934: 931: 925: 924: 915:(3–4): 333–349. 891: 885: 877: 871: 854:(Theropoda) and 848: 842: 841: 832: 806:Jaklapallisaurus 801:Maleri Formation 761:Maleri Formation 625:position within 464:Life restoration 438:Prolacertiformes 415:Maleri Formation 350:partly based on 345: 344: 341: 340: 337: 334: 331: 328: 325: 322: 319: 316: 313: 278: 256: 252: 212: 205: 139: 138: 120: 110: 40: 29:Temporal range: 21: 20: 2333: 2332: 2328: 2327: 2326: 2324: 2323: 2322: 2278: 2277: 2276: 2271: 2263: 2258: 2250: 2245: 2237: 2232: 2224: 2219: 2211: 2206: 2197: 2196: 2191: 2178: 2168: 2163: 2149:Phytodinosauria 2130: 2117: 2073: 2044: 2038:Sauropodomorpha 2027:Sauropodomorpha 2005: 1970:Herrerasauridae 1964: 1912: 1841: 1828: 1796: 1779: 1710: 1638: 1583: 1581:Dinosauromorpha 1566: 1543: 1461: 1448: 1396: 1361: 1359:Avemetatarsalia 1340: 1337:Avemetatarsalia 1321: 1307:Avemetatarsalia 1301: 1274: 1243: 1211: 1210: 1200: 1195: 1151: 1110: 1105: 1099: 1095: 1086: 1082: 1078:284: 2137-2147. 1073: 1069: 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1149:External links 1147: 1146: 1145: 1142:The Dinosauria 1138: 1115: 1109: 1106: 1104: 1103: 1093: 1080: 1067: 1058: 1046: 1037: 1028: 1015: 1000: 970: 955: 935: 926: 886: 872: 843: 826: 824: 821: 796: 793: 765:Andhra Pradesh 748: 745: 743: 740: 716: 715: 708: 702: 674: 671: 665:insisted that 580: 577: 530: 527: 457: 454: 392:paleontologist 373: 370: 288: 287: 286: 285: 270: 269: 263: 262: 259: 245: 244: 238: 237: 229: 227: 223: 222: 201: 197: 196: 191: 184: 183: 178: 171: 170: 165: 161: 160: 155: 151: 150: 145: 141: 140: 127: 126: 122: 121: 113: 112: 104: 103: 102: 97: 92: 87: 82: 77: 72: 67: 62: 57: 52: 47: 42: 28: 15: 9: 6: 4: 3: 2: 2330: 2319: 2316: 2314: 2311: 2309: 2306: 2304: 2301: 2299: 2296: 2294: 2291: 2289: 2286: 2285: 2283: 2266: 2261: 2257: 2253: 2248: 2244: 2240: 2235: 2231: 2227: 2222: 2218: 2214: 2209: 2205: 2200: 2194: 2190: 2189: 2187: 2185: 2181: 2177: 2172: 2160: 2152: 2150: 2147: 2145: 2141: 2140: 2137: 2128: 2124: 2121: 2115: 2110: 2104: 2068: 2064: 2062: 2058: 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1025: 1019: 1011: 1007: 1003: 997: 993: 989: 985: 981: 974: 966: 962: 958: 952: 948: 947: 939: 930: 922: 918: 914: 910: 909: 904: 900: 896: 890: 882: 876: 869: 865: 861: 857: 853: 847: 839: 831: 827: 820: 818: 814: 813: 808: 807: 802: 792: 790: 786: 782: 779:stage of the 778: 774: 770: 766: 762: 758: 754: 739: 737: 733: 729: 725: 721: 713: 709: 707: 703: 700: 696: 695:neural arches 692: 691: 690: 688: 683: 681: 670: 668: 664: 660: 656: 652: 648: 644: 643: 638: 634: 630: 628: 624: 620: 616: 612: 608: 604: 600: 599: 594: 590: 586: 576: 574: 570: 566: 562: 558: 554: 551: 547: 543: 539: 536: 526: 524: 520: 519:morphological 516: 512: 508: 504: 503: 498: 494: 490: 486: 482: 481:spinal column 478: 474: 471: 462: 453: 451: 447: 443: 439: 435: 431: 427: 422: 420: 416: 412: 408: 404: 400: 396: 393: 390: 386: 382: 378: 369: 367: 363: 362:Late Triassic 359: 356: 353: 349: 343: 304: 303: 294: 282: 277: 274: 273: 271: 268: 264: 257: 255: 246: 243: 242:Binomial name 239: 235: 234: 228: 225: 224: 219: 215: 210: 209: 202: 199: 198: 195: 192: 189: 186: 185: 182: 179: 176: 173: 172: 169: 166: 163: 162: 159: 156: 153: 152: 149: 146: 143: 142: 137: 132: 128: 123: 119: 114: 100: 95: 90: 85: 80: 75: 70: 65: 60: 55: 50: 45: 39: 32: 31:Late Triassic 26: 22: 19: 2288:Saurischians 2183: 2106: 2015:Eusaurischia 1998: 1991: 1984: 1977: 1956: 1948: 1940: 1934:Chindesaurus 1932: 1905: 1894: 1884: 1874: 1866:Chindesaurus 1864: 1855: 1854: 1822:Ornithischia 1811:Ornithischia 1772: 1765: 1758: 1751: 1746:Ignotosaurus 1744: 1737: 1730: 1723: 1704:Technosaurus 1702: 1697:Soumyasaurus 1695: 1689:Pisanosaurus 1687: 1680: 1673: 1666: 1659: 1647:Silesauridae 1631: 1620: 1610: 1600: 1538:Venetoraptor 1536: 1528: 1521: 1514: 1507: 1499: 1492: 1485:Lagerpetidae 1441: 1434: 1429:Spondylosoma 1427: 1420: 1412: 1405:Aphanosauria 1389: 1378: 1335: 1232: 1155: 1141: 1134: 1130: 1126: 1122: 1118: 1108:Bibliography 1096: 1088: 1083: 1075: 1070: 1061: 1040: 1031: 1023: 1018: 983: 973: 945: 938: 929: 912: 906: 889: 880: 875: 867: 863: 859: 855: 851: 846: 837: 830: 816: 810: 804: 798: 752: 750: 742:Paleoecology 719: 717: 706:femoral head 698: 686: 684: 680:autapomorphy 676: 666: 646: 640: 632: 631: 610: 596: 592: 588: 584: 582: 559:nor clearly 541: 532: 522: 511:premaxillary 506: 500: 496: 483:, most of a 472: 467: 449: 425: 423: 421:were found. 410: 406: 395:Alick Walker 380: 376: 375: 364:, living in 301: 300: 299: 275: 253: 248: 232: 231: 207: 206: 187: 174: 24: 18: 1979:Gnathovorax 1958:Caseosaurus 1760:Lutungutali 1753:Kwanasaurus 1725:Amanasaurus 1668:Asilisaurus 1661:Agnosphitys 1622:Nyasasaurus 1560:Pterosauria 1549:Pterosauria 1516:Kongonaphon 1509:Ixalerpeton 1459:Ornithodira 1436:Teleocrater 1422:Dongusuchus 1391:Mambachiton 1237:Archosauria 1163:(in German) 1137:14(1): 142. 1123:Morturneria 870:14(1): 142. 856:Morturneria 726:teeth, the 710:the fourth 663:Paul Sereno 619:saurischian 573:vertebrates 561:carnivorous 557:herbivorous 456:Description 430:crurotarsan 411:maleriensis 405:, the name 399:preoccupied 355:saurischian 281:preoccupied 2282:Categories 2184:Alwalkeria 2142:See also: 1886:Eodromaeus 1856:Alwalkeria 1839:Saurischia 1794:Dinosauria 1774:Silesaurus 1767:Sacisaurus 1682:Lewisuchus 1612:Marasuchus 1602:Lagosuchus 1523:Lagerpeton 1494:Dromomeron 1443:Yarasuchus 1316:see below↓ 1268:Sauropsida 1253:Sauropsida 1228:Sauropsida 1156:Alwalkeria 1119:Alwalkeria 899:Chatterjee 852:Alwalkeria 823:References 817:Alwalkeria 753:Alwalkeria 720:Alwalkeria 712:trochanter 699:Alwalkeria 687:Alwalkeria 651:Saurischia 633:Alwalkeria 627:Saurischia 611:Alwalkeria 593:Alwalkeria 585:Alwalkeria 544:and basal 535:heterodont 523:Alwalkeria 497:Alwalkeria 489:astragalus 450:Alwalkeria 446:astragalus 436:including 426:Alwalkeria 407:Alwalkeria 377:Alwalkeria 302:Alwalkeria 214:Chatterjee 208:Alwalkeria 194:Saurischia 181:Dinosauria 25:Alwalkeria 2065:includes 2061:Theropoda 2050:Theropoda 1675:Gamatavus 1214:Kingdom: 1010:229651571 965:985402380 791:, India. 655:Theropoda 637:cladistic 598:Protoavis 553:theropods 550:predatory 538:dentition 521:grounds. 515:maxillary 487:, and an 477:vertebrae 226:Species: 154:Kingdom: 148:Eukaryota 36:228  2213:47043859 2193:Wikidata 2159:Category 1896:Saltopus 1732:Diodorus 1633:Saltopus 1222:Chordata 1220:Phylum: 1216:Animalia 1131:Turneria 1127:Walkeria 1101:183–189. 864:Turneria 860:Walkeria 812:Nambalia 781:Triassic 773:mudstone 757:Godavari 734:and the 724:serrated 667:Eoraptor 647:Eoraptor 642:Eoraptor 615:theropod 571:, small 565:omnivore 542:Eoraptor 513:and the 507:Eoraptor 505:. As in 502:Eoraptor 473:ISI R306 470:holotype 444:and the 434:reptiles 403:bryozoan 358:dinosaur 276:Walkeria 267:Synonyms 218:Creisler 168:Chordata 164:Phylum: 158:Animalia 144:Domain: 2252:4946938 2239:1215542 2226:4822917 2199:Q133238 1226:Class: 1076:Science 789:Kolkata 777:Carnian 661:split. 569:insects 419:fossils 389:British 251:† 230:† 200:Genus: 105:↓ 1008:  998:  963:  953:  732:fibula 589:et al. 440:; the 220:, 1994 216:& 2265:66343 2234:IRMNG 2067:birds 1233:Clade 1006:S2CID 895:Novas 787:, in 769:India 736:ankle 623:basal 607:femur 493:skull 485:femur 442:femur 401:by a 366:India 352:basal 348:genus 188:Clade 175:Clade 2221:GBIF 2059:see 2036:see 1950:Tawa 1907:Tawa 1820:see 1558:see 1293:see 1266:see 996:ISBN 961:OCLC 951:ISBN 884:218. 809:and 799:The 44:PreꞒ 2208:EoL 1159:at 988:doi 917:doi 913:101 763:of 383:by 333:ɪər 2284:: 2262:: 2249:: 2236:: 2223:: 2210:: 2195:: 1235:: 1049:^ 1004:. 994:. 959:. 911:. 905:. 767:, 738:. 629:. 368:. 324:ɔː 190:: 177:: 94:Pg 38:Ma 33:, 2024:† 1961:? 1953:? 1945:? 1937:? 1918:† 1903:† 1899:? 1892:† 1882:† 1872:† 1862:† 1852:† 1808:† 1707:? 1692:? 1649:? 1644:† 1629:† 1625:? 1618:† 1608:† 1598:† 1533:? 1504:? 1473:† 1417:? 1402:† 1387:† 1383:? 1376:† 1190:e 1183:t 1176:v 1012:. 990:: 967:. 923:. 919:: 840:. 701:) 657:- 342:/ 339:ə 336:i 330:k 327:ˈ 321:w 318:l 315:æ 312:ˌ 309:/ 305:( 283:) 204:† 99:N 89:K 84:J 79:T 74:P 69:C 64:D 59:S 54:O 49:Ꞓ

Index

Late Triassic
Ma
PreꞒ

O
S
D
C
P
T
J
K
Pg
N

Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Dinosauria
Saurischia
Alwalkeria
Chatterjee
Creisler
Binomial name
Synonyms
preoccupied

/ˌælwɔːˈkɪəriə/

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