2963:
2970:
2983:
2990:
2976:
151:
124:
1270:
was interpreted as a natural group in the early 1990s, this hypothesis has fallen out of favor and
Hypsilophodontidae has been found to be an unnatural family composed of a variety of animals more or less closely related to Iguanodontia
2116:"New small-bodied ornithopods (Dinosauria, Neornithischia) from the Early Cretaceous Wonthaggi Formation (Strzelecki Group) of the Australian-Antarctic rift system, with revision of Qantassaurus intrepidus Rich and Vickers-Rich, 1999"
2078:
Brown, Caleb
Marshall; Evans, David C.; Ryan, Michael J.; Russell, Anthony P. (2013). "New data on the diversity and abundance of small-bodied ornithopods (Dinosauria, Ornithischia) from the Belly River Group (Campanian) of Alberta".
1566:
Brown, C.M.; Evans, D.C.; Ryan, M.J.; Russell, A.P. (2013). "New data on the diversity and abundance of small-bodied ornithopods (Dinosauria, Ornithischia) from the Belly River Group (Campanian) of
Alberta".
538:
that
Sternberg was the proper authority for Thescelosauridae, giving it priority over Parksosauridae. As well, they gave Thescelosauridae the definition of the largest clade containing
3216:
530:, but they contained the same taxa so Boyd used Parksosauridae under the assumption it had priority. However, in formalizing the clade following the regulations of the
518:
by
Buchholz, would have had priority over Thescelosauridae. The two clades had slightly different definitions, with Parksosauridae referring to all animals closer to
3314:
2044:"A new basal ornithopod dinosaur (Frenchman Formation, Saskatchewan, Canada), and implications for late Maastrichtian ornithischian diversity in North America"
1870:; Sues, Hans-Dieter; Witmer, Larry M.; Coria, Rodolfo A. (2004). "Basal Ornithopoda". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.).
1657:
3301:
556:
was not in the group, modifying previous definitions for
Thescelosauridae in order to maintain its modern use, so that the clade was not applied if
3383:
2180:
1887:
1708:
1328:
was followed by the recognition of the distinct family
Parksosauridae by Buchholz in 2002, defined as the most inclusive clade containing
2962:
3378:
1777:
Boyd, Clint A.; Brown, Caleb M.; Scheetz, Rodney D.; Clarke, Julia A. (2009). "Taxonomic revision of the basal neornithischian taxa
2982:
1469:"A new semi‐fossorial thescelosaurine dinosaur from the Cenomanian‐age Mussentuchit Member of the Cedar Mountain Formation, Utah"
138:
2969:
1450:
which was found in burrows, based upon the packing of their bones in situations where they typically would have been scattered.
2989:
150:
580:
as the reference analysis for the name
Thescelosauridae, an analysis based on a revised version of the 2015 Boyd analysis.
3373:
916:
2975:
2933:
2173:
1279:
of closely related taxa. "Hypsilophodontidae" and "hypsilophodont" are better understood as informal terms for an
1348:
546:
1307:
and the species that had been assigned to that genus, there were at least two and possibly three species within
3368:
2268:
950:
540:
933:
506:, based on their phylogenetic results. During a phylogenetic revision of neornithischians by Clint Boyd in
3241:
2364:
510:, the authorship of Thescelosauridae was given to Brown and colleagues, which meant that the similar name
3340:
2610:
2166:
1473:
1360:(2011) found North American "hypsilophodonts" of Cretaceous age to sort into two related clusters, one (
3279:
3288:
2878:
2633:
1330:
577:
535:
515:
507:
491:
487:
483:
265:
261:
2910:
2485:
2147:
Buchholz, P. W. (2002). "Phylogeny and biogeography of basal
Ornithischia". In Brown, D. E. (ed.).
1906:
1727:
1336:
552:
3195:
2922:
2096:
2021:
1930:
1844:
1802:
1677:
1584:
1325:
1280:
1267:
561:
428:
145:
3345:
1879:
3327:
3163:
2515:
1982:
1883:
1704:
1638:
1548:
1515:
Madzia, D.; Arbour, V.M.; Boyd, C.A.; Farke, A.A.; Cruzado-Caballero, P.; Evans, D.C. (2021).
1488:
882:
3332:
3319:
1315:
could not yet be assigned to a species within the genus. It appears to be closely related to
2127:
2088:
2055:
2013:
1972:
1964:
1922:
1871:
1836:
1794:
1746:
1669:
1628:
1618:
1576:
1538:
1528:
1478:
1429:
1383:
1342:
868:
564:, a family that has not been recently used but may be revived if the systematic position of
39:
3185:
2890:
2758:
2253:
2228:
2001:
1867:
1823:
Han, Feng-Lu; Paul M. Barrett; Richard J. Butler; Xing Xu (2012). "Postcranial anatomy of
1467:
Avrahami, Haviv M.; Makovicky, Peter J.; Tucker, Ryan T.; Zanno, Lindsay E. (2024-07-09).
1010:
346:
43:
1909:; Jianu, Coralia-Maria; Csiki, Z.; Norman, David B. (2003). "Osteology and phylogeny of
1731:
123:
3200:
3180:
3131:
3056:
2841:
2751:
2689:
2654:
2581:
1977:
1952:
1633:
1606:
1543:
1516:
1424:
1419:
1404:
1394:
1100:
726:
706:
587:
496:
467:
408:
293:
227:
133:
1291:
among the hypsilophodonts. One issue that has potentially interfered with classifying
3362:
3148:
3098:
2856:
2827:
2813:
2797:
2682:
2675:
2574:
2494:
2418:
2411:
2379:
2100:
2060:
2043:
1872:
1588:
1446:
1378:
1372:
1147:
1067:
1050:
821:
656:
601:
526:
479:
393:
385:
329:
322:
307:
300:
81:
2025:
1934:
1848:
1806:
1732:"Systematics of Hypsilophodontidae and Basal Iguanodontia (Dinosauria: Ornithopoda)"
1681:
3190:
3141:
3084:
3070:
3063:
3018:
2834:
2789:
2717:
2696:
2599:
2473:
2465:
2441:
2395:
2330:
2317:
2280:
2189:
1699:, Dryosauridae". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.).
1607:"The systematic relationships and biogeographic history of ornithischian dinosaurs"
1388:
1317:
1288:
1272:
899:
740:
520:
401:
377:
211:
1673:
3264:
2092:
1913:(n.g.), an unusual euornithopod dinosaur from the latest Cretaceous of Romania".
1840:
1827:(Dinosauria, Ornithischia) from the Lower Cretaceous Yixian Formation of China".
1580:
3273:
3119:
3091:
3049:
3042:
3035:
2867:
2766:
2731:
2668:
2622:
2554:
2433:
2403:
2356:
2348:
1415:
1361:
972:
673:
625:
354:
56:
1299:
necessarily belong to it. Clint Boyd and colleagues found that while the clade
3112:
3105:
2899:
2848:
2820:
2805:
2781:
2724:
2703:
2588:
2567:
2543:
2536:
2522:
2508:
2457:
2449:
2425:
2017:
1926:
1750:
1410:
1366:
1130:
993:
790:
757:
502:
471:
415:
369:
315:
243:
101:
66:
1492:
3077:
2710:
2501:
2387:
1703:(1st ed.). Berkeley: University of California Press. pp. 498–509.
531:
475:
162:
106:
50:
2114:
Herne, Matthew C.; Nair, Jay P.; Evans, Alistair R.; Tait, Alan M. (2019).
1986:
1968:
1642:
1552:
17:
3258:
3028:
2529:
2372:
2237:
2213:
1798:
837:
195:
182:
96:
91:
76:
71:
61:
2132:
2115:
1533:
3306:
3156:
2219:
1953:"First trace and body fossil evidence of a burrowing, denning dinosaur"
1658:"A basal ornithopod dinosaur from the Cenomanian of the Czech Republic"
1623:
111:
86:
2207:
1951:
Varricchio, David J.; Martin, Anthony J.; Katsura, Yoshihiro (2007).
1483:
1468:
1441:
1402:(2013) recovered similar results, with the addition of the new genus
172:
3235:
1878:(2nd ed.). Berkeley: University of California Press. pp.
1418:) and several long-snouted Asian forms (previously described under
1276:
3293:
1695:
Sues, Hans-Dieter; Norman, David B. (1990). "Hypsilophodontidae,
494:, where it was used by Brown and colleagues as the group uniting
2774:
362:
3239:
3005:
2315:
2200:
2162:
2158:
2042:
Brown, Caleb M.; Boyd, Clint A.; Russell, Anthony P. (2011).
1321:, although this relationship has been called into question.
1517:"The phylogenetic nomenclature of ornithischian dinosaurs"
2004:(2008). "The phylogeny of the ornithischian dinosaurs".
1957:
Proceedings of the Royal
Society B: Biological Sciences
3217:
List of stratigraphic units with ornithischian tracks
3248:
3209:
3173:
3129:
3016:
2921:
2898:
2889:
2866:
2741:
2652:
2621:
2598:
2553:
2484:
2328:
2279:
2252:
568:was solidified at some point in the future. Madzia
2151:. Casper: Tate Geological Museum. pp. 18–34.
1311:, and several specimens previously assigned to
2037:
2035:
1287:has been regarded as both very basal and very
2174:
534:, Madzia, Boyd, and colleagues identified in
482:. The group was originally used as a name by
8:
2073:
2071:
1510:
1508:
1506:
1504:
1502:
1818:
1816:
1772:
1770:
1768:
1766:
1656:Madzia, D.; Boyd, C.A.; Mazuch, M. (2017).
1295:is that not all of the remains assigned to
3236:
3013:
3002:
2895:
2660:
2559:
2340:
2336:
2325:
2312:
2258:
2249:
2197:
2181:
2167:
2159:
1600:
1598:
122:
31:
2131:
2059:
2048:Zoological Journal of the Linnean Society
1976:
1901:
1899:
1862:
1860:
1858:
1632:
1622:
1542:
1532:
1482:
1946:
1944:
1459:
1722:
1720:
490:, but was not formally defined until
7:
2000:Butler, Richard J.; Upchurch, Paul;
2006:Journal of Systematic Palaeontology
1915:Journal of Systematic Palaeontology
1662:Journal of Systematic Palaeontology
1092:
1042:
1035:
985:
978:
874:
864:
813:
806:
782:
732:
722:
698:
648:
641:
617:
593:
583:
2081:Journal of Vertebrate Paleontology
1829:Journal of Vertebrate Paleontology
1787:Journal of Vertebrate Paleontology
1569:Journal of Vertebrate Paleontology
572:identified the analysis of Madzia
25:
2988:
2981:
2974:
2968:
2961:
2061:10.1111/j.1096-3642.2011.00735.x
149:
139:Burpee Museum of Natural History
1730:; Heinrich, Ronald E. (1992).
1:
3384:Prehistoric dinosaur families
1674:10.1080/14772019.2017.1371258
917:Thescelosaurus assiniboiensis
2093:10.1080/02724634.2013.746229
1841:10.1080/02724634.2012.694385
1581:10.1080/02724634.2013.746229
1825:Jeholosaurus shangyuanensis
27:Extinct family of dinosaurs
3400:
3379:Maastrichtian extinctions
3012:
3001:
2958:
2663:
2562:
2343:
2339:
2324:
2311:
2261:
2248:
2196:
2018:10.1017/S1477201907002271
1927:10.1017/S1477201903001032
1751:10.1080/10292389209380426
1349:Iguanodon bernissartensis
1144:
1127:
1114:
1097:
1090:
1064:
1047:
1040:
1033:
1007:
990:
983:
976:
947:
930:
913:
896:
879:
872:
862:
835:
818:
811:
804:
787:
780:
754:
737:
730:
720:
703:
696:
670:
653:
646:
639:
622:
615:
598:
591:
547:Iguanodon bernissartensis
434:
427:
277:
272:
146:Scientific classification
144:
130:
121:
34:
951:Thescelosaurus neglectus
541:Thescelosaurus neglectus
514:, informally defined in
2149:The Mesozoic in Wyoming
2120:Journal of Paleontology
1605:Boyd, Clint A. (2015).
1116:Kaiparowits orodromine
934:Thescelosaurus garbanii
1969:10.1098/rspb.2006.0443
1275:), with various small
3341:Paleobiology Database
1474:The Anatomical Record
1440:Orodromines may have
3374:Cretaceous dinosaurs
1907:Weishampel, David B.
1799:10.1671/039.029.0328
1728:Weishampel, David B.
1331:Parksosaurus warreni
1283:, not a true clade.
484:Charles M. Sternberg
131:Mounted specimen of
2486:Heterodontosauridae
2133:10.1017/jpa.2018.95
1963:(1616): 1361–1368.
1534:10.7717/peerj.12362
1337:Hypsilophodon foxii
1324:The dissolution of
1303:included the genus
553:Hypsilophodon foxii
3196:Hypsilophodontidae
2934:Pachycephalosauria
2923:Pachycephalosauria
1739:Historical Biology
1624:10.7717/peerj.1523
1444:, as is known for
1326:Hypsilophodontidae
1281:evolutionary grade
1268:Hypsilophodontidae
562:Hypsilophodontidae
3356:
3355:
3328:Open Tree of Life
3242:Taxon identifiers
3233:
3232:
3229:
3228:
3225:
3224:
3164:Serendipaceratops
2997:
2996:
2956:
2955:
2952:
2951:
2948:
2947:
2944:
2943:
2648:
2647:
2644:
2643:
2516:Heterodontosaurus
2307:
2306:
2303:
2302:
2299:
2298:
1889:978-0-520-24209-8
1710:978-0-520-06727-1
1382:, and the other (
1356:(2009) and Brown
1258:
1257:
1249:
1248:
1240:
1239:
1231:
1230:
1222:
1221:
1213:
1212:
1204:
1203:
1195:
1194:
1186:
1185:
1177:
1176:
1168:
1167:
1159:
1158:
1079:
1078:
1022:
1021:
962:
961:
883:Notohypsilophodon
848:
847:
769:
768:
685:
684:
461:
460:
455:
442:
342:
289:
268:
16:(Redirected from
3391:
3349:
3348:
3336:
3335:
3323:
3322:
3310:
3309:
3297:
3296:
3284:
3283:
3282:
3280:Thescelosauridae
3269:
3268:
3267:
3250:Thescelosauridae
3237:
3014:
3003:
2992:
2986:
2985:
2979:
2978:
2972:
2966:
2965:
2896:
2743:Thescelosauridae
2661:
2560:
2341:
2337:
2326:
2313:
2259:
2250:
2243:
2242:
2198:
2183:
2176:
2169:
2160:
2153:
2152:
2144:
2138:
2137:
2135:
2111:
2105:
2104:
2075:
2066:
2065:
2063:
2054:(4): 1157–1198.
2039:
2030:
2029:
2002:Norman, David B.
1997:
1991:
1990:
1980:
1948:
1939:
1938:
1903:
1894:
1893:
1877:
1868:Norman, David B.
1864:
1853:
1852:
1835:(6): 1370–1395.
1820:
1811:
1810:
1774:
1761:
1760:
1758:
1757:
1736:
1724:
1715:
1714:
1692:
1686:
1685:
1653:
1647:
1646:
1636:
1626:
1617:(e1523): e1523.
1602:
1593:
1592:
1563:
1557:
1556:
1546:
1536:
1512:
1497:
1496:
1486:
1484:10.1002/ar.25505
1464:
1430:Thescelosaurinae
1386:) consisting of
1384:Thescelosaurinae
1364:) consisting of
1343:Dryosaurus altus
1093:
1043:
1036:
986:
979:
875:
869:Thescelosaurinae
865:
859:Thescelosauridae
814:
807:
783:
733:
723:
699:
649:
642:
618:
594:
584:
468:neornithischians
464:Thescelosauridae
449:
440:
340:
338:Thescelosaurinae
283:
260:
257:Thescelosauridae
255:
242:
226:
210:
154:
153:
126:
116:
53:
38:Temporal range:
32:
21:
3399:
3398:
3394:
3393:
3392:
3390:
3389:
3388:
3369:Thescelosaurids
3359:
3358:
3357:
3352:
3344:
3339:
3331:
3326:
3318:
3313:
3305:
3300:
3292:
3287:
3278:
3277:
3272:
3263:
3262:
3257:
3244:
3234:
3221:
3205:
3186:Phytodinosauria
3169:
3125:
3008:
2993:
2980:
2973:
2960:
2940:
2917:
2891:Marginocephalia
2885:
2862:
2759:Changchunsaurus
2737:
2657:
2640:
2617:
2594:
2549:
2480:
2333:
2320:
2295:
2275:
2269:Avemetatarsalia
2254:Avemetatarsalia
2244:
2229:Avemetatarsalia
2203:
2202:
2192:
2187:
2157:
2156:
2146:
2145:
2141:
2113:
2112:
2108:
2077:
2076:
2069:
2041:
2040:
2033:
1999:
1998:
1994:
1950:
1949:
1942:
1905:
1904:
1897:
1890:
1866:
1865:
1856:
1822:
1821:
1814:
1776:
1775:
1764:
1755:
1753:
1734:
1726:
1725:
1718:
1711:
1694:
1693:
1689:
1668:(11): 967–979.
1655:
1654:
1650:
1604:
1603:
1596:
1565:
1564:
1560:
1514:
1513:
1500:
1466:
1465:
1461:
1456:
1438:
1264:
1259:
1250:
1241:
1232:
1223:
1214:
1205:
1196:
1187:
1178:
1169:
1160:
1080:
1023:
1011:Changchunsaurus
963:
849:
770:
686:
441:Buchholtz, 2002
347:Changchunsaurus
341:Sternberg, 1940
259:
253:
240:
224:
208:
148:
117:
115:
114:
109:
104:
99:
94:
89:
84:
79:
74:
69:
64:
59:
48:
47:
44:Late Cretaceous
36:
35:Thescelosaurids
28:
23:
22:
15:
12:
11:
5:
3397:
3395:
3387:
3386:
3381:
3376:
3371:
3361:
3360:
3354:
3353:
3351:
3350:
3337:
3324:
3311:
3298:
3285:
3270:
3254:
3252:
3246:
3245:
3240:
3231:
3230:
3227:
3226:
3223:
3222:
3220:
3219:
3213:
3211:
3210:Other articles
3207:
3206:
3204:
3203:
3201:Jeholosauridae
3198:
3193:
3188:
3183:
3181:Ornithoscelida
3177:
3175:
3171:
3170:
3168:
3167:
3160:
3153:
3145:
3137:
3135:
3132:Incertae sedis
3127:
3126:
3124:
3123:
3116:
3109:
3102:
3095:
3088:
3081:
3074:
3067:
3060:
3057:Ferganocephale
3053:
3046:
3039:
3032:
3024:
3022:
3010:
3009:
3006:
2999:
2998:
2995:
2994:
2959:
2957:
2954:
2953:
2950:
2949:
2946:
2945:
2942:
2941:
2939:
2938:
2937:
2936:
2927:
2925:
2919:
2918:
2916:
2915:
2914:
2913:
2904:
2902:
2893:
2887:
2886:
2884:
2883:
2882:
2881:
2872:
2870:
2864:
2863:
2861:
2860:
2853:
2845:
2842:Thescelosaurus
2838:
2831:
2824:
2817:
2810:
2802:
2794:
2786:
2778:
2771:
2763:
2755:
2752:Albertadromeus
2747:
2745:
2739:
2738:
2736:
2735:
2728:
2721:
2714:
2707:
2700:
2693:
2690:Kulindadromeus
2686:
2679:
2672:
2664:
2658:
2655:Neornithischia
2653:
2650:
2649:
2646:
2645:
2642:
2641:
2639:
2638:
2637:
2636:
2627:
2625:
2619:
2618:
2616:
2615:
2614:
2613:
2604:
2602:
2596:
2595:
2593:
2592:
2585:
2582:Scutellosaurus
2578:
2571:
2563:
2557:
2551:
2550:
2548:
2547:
2540:
2533:
2526:
2519:
2512:
2505:
2498:
2490:
2488:
2482:
2481:
2479:
2478:
2470:
2462:
2454:
2446:
2438:
2430:
2422:
2415:
2408:
2400:
2392:
2384:
2376:
2369:
2361:
2353:
2344:
2334:
2329:
2322:
2321:
2316:
2309:
2308:
2305:
2304:
2301:
2300:
2297:
2296:
2294:
2293:
2292:
2291:
2285:
2283:
2277:
2276:
2274:
2273:
2272:
2271:
2262:
2256:
2246:
2245:
2241:
2240:
2231:
2222:
2216:
2210:
2201:
2194:
2193:
2188:
2186:
2185:
2178:
2171:
2163:
2155:
2154:
2139:
2126:(3): 543–584.
2106:
2087:(3): 495–520.
2067:
2031:
1992:
1940:
1895:
1888:
1874:The Dinosauria
1854:
1812:
1793:(3): 758–770.
1779:Thescelosaurus
1762:
1745:(3): 159–184.
1716:
1709:
1701:The Dinosauria
1687:
1648:
1594:
1575:(3): 495–520.
1558:
1498:
1458:
1457:
1455:
1452:
1437:
1434:
1428:clade (called
1425:Thescelosaurus
1420:Jeholosauridae
1414:clade (called
1405:Albertadromeus
1395:Thescelosaurus
1309:Thescelosaurus
1301:Thescelosaurus
1293:Thescelosaurus
1285:Thescelosaurus
1263:
1260:
1256:
1255:
1252:
1251:
1247:
1246:
1243:
1242:
1238:
1237:
1234:
1233:
1229:
1228:
1225:
1224:
1220:
1219:
1216:
1215:
1211:
1210:
1207:
1206:
1202:
1201:
1198:
1197:
1193:
1192:
1189:
1188:
1184:
1183:
1180:
1179:
1175:
1174:
1171:
1170:
1166:
1165:
1162:
1161:
1157:
1156:
1153:
1152:
1143:
1140:
1139:
1136:
1135:
1126:
1123:
1122:
1119:
1118:
1113:
1110:
1109:
1106:
1105:
1101:Albertadromeus
1096:
1091:
1089:
1086:
1085:
1082:
1081:
1077:
1076:
1073:
1072:
1063:
1060:
1059:
1056:
1055:
1046:
1041:
1039:
1034:
1032:
1029:
1028:
1025:
1024:
1020:
1019:
1016:
1015:
1006:
1003:
1002:
999:
998:
989:
984:
982:
977:
975:
969:
968:
965:
964:
960:
959:
956:
955:
946:
943:
942:
939:
938:
929:
926:
925:
922:
921:
912:
909:
908:
905:
904:
895:
892:
891:
888:
887:
878:
873:
871:
863:
861:
855:
854:
851:
850:
846:
845:
842:
841:
834:
831:
830:
827:
826:
817:
812:
810:
805:
803:
800:
799:
796:
795:
786:
781:
779:
776:
775:
772:
771:
767:
766:
763:
762:
753:
750:
749:
746:
745:
736:
731:
729:
727:Jeholosauridae
721:
719:
716:
715:
712:
711:
707:Kulindadromeus
702:
697:
695:
692:
691:
688:
687:
683:
682:
679:
678:
669:
666:
665:
662:
661:
652:
647:
645:
640:
638:
635:
634:
631:
630:
621:
616:
614:
611:
610:
607:
606:
597:
592:
590:
588:Neornithischia
582:
558:Thescelosaurus
512:Parksosauridae
497:Thescelosaurus
466:is a clade of
459:
458:
457:
456:
446:Jeholosauridae
443:
438:Parksosauridae
432:
431:
425:
424:
423:
422:
421:
420:
412:
409:Thescelosaurus
405:
398:
390:
382:
374:
366:
359:
351:
335:
334:
333:
326:
319:
312:
304:
297:
294:Albertadromeus
275:
274:
270:
269:
251:
247:
246:
238:
231:
230:
228:Neornithischia
222:
215:
214:
206:
199:
198:
193:
186:
185:
180:
176:
175:
170:
166:
165:
160:
156:
155:
142:
141:
134:Thescelosaurus
128:
127:
119:
118:
110:
105:
100:
95:
90:
85:
80:
75:
70:
65:
60:
55:
54:
37:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
3396:
3385:
3382:
3380:
3377:
3375:
3372:
3370:
3367:
3366:
3364:
3347:
3342:
3338:
3334:
3329:
3325:
3321:
3316:
3312:
3308:
3303:
3299:
3295:
3290:
3286:
3281:
3275:
3271:
3266:
3260:
3256:
3255:
3253:
3251:
3247:
3243:
3238:
3218:
3215:
3214:
3212:
3208:
3202:
3199:
3197:
3194:
3192:
3189:
3187:
3184:
3182:
3179:
3178:
3176:
3172:
3166:
3165:
3161:
3159:
3158:
3154:
3151:
3150:
3149:Dravidosaurus
3146:
3144:
3143:
3139:
3138:
3136:
3134:
3133:
3128:
3122:
3121:
3117:
3115:
3114:
3110:
3108:
3107:
3103:
3101:
3100:
3099:Syngonosaurus
3096:
3094:
3093:
3089:
3087:
3086:
3082:
3080:
3079:
3075:
3073:
3072:
3068:
3066:
3065:
3061:
3059:
3058:
3054:
3052:
3051:
3047:
3045:
3044:
3040:
3038:
3037:
3033:
3031:
3030:
3026:
3025:
3023:
3021:
3020:
3015:
3011:
3004:
3000:
2991:
2987:
2984:
2977:
2971:
2964:
2935:
2931:
2930:
2929:
2928:
2926:
2924:
2920:
2912:
2908:
2907:
2906:
2905:
2903:
2901:
2897:
2894:
2892:
2888:
2880:
2876:
2875:
2874:
2873:
2871:
2869:
2865:
2859:
2858:
2857:Zephyrosaurus
2854:
2851:
2850:
2846:
2844:
2843:
2839:
2837:
2836:
2832:
2830:
2829:
2828:Oryctodromeus
2825:
2823:
2822:
2818:
2816:
2815:
2814:Nevadadromeus
2811:
2808:
2807:
2803:
2800:
2799:
2798:Koreanosaurus
2795:
2792:
2791:
2787:
2784:
2783:
2779:
2777:
2776:
2772:
2769:
2768:
2764:
2761:
2760:
2756:
2754:
2753:
2749:
2748:
2746:
2744:
2740:
2734:
2733:
2729:
2727:
2726:
2722:
2720:
2719:
2715:
2713:
2712:
2708:
2706:
2705:
2701:
2699:
2698:
2694:
2692:
2691:
2687:
2685:
2684:
2683:Hypsilophodon
2680:
2678:
2677:
2676:Hexinlusaurus
2673:
2671:
2670:
2666:
2665:
2662:
2659:
2656:
2651:
2635:
2631:
2630:
2629:
2628:
2626:
2624:
2620:
2612:
2608:
2607:
2606:
2605:
2603:
2601:
2597:
2591:
2590:
2586:
2584:
2583:
2579:
2577:
2576:
2575:Scelidosaurus
2572:
2570:
2569:
2565:
2564:
2561:
2558:
2556:
2552:
2546:
2545:
2541:
2539:
2538:
2534:
2532:
2531:
2527:
2525:
2524:
2520:
2518:
2517:
2513:
2511:
2510:
2506:
2504:
2503:
2499:
2497:
2496:
2495:Abrictosaurus
2492:
2491:
2489:
2487:
2483:
2476:
2475:
2471:
2468:
2467:
2463:
2460:
2459:
2455:
2452:
2451:
2447:
2444:
2443:
2439:
2436:
2435:
2431:
2428:
2427:
2423:
2421:
2420:
2419:Lesothosaurus
2416:
2414:
2413:
2412:Laquintasaura
2409:
2406:
2405:
2401:
2398:
2397:
2393:
2390:
2389:
2385:
2382:
2381:
2380:Eucoelophysis
2377:
2375:
2374:
2370:
2367:
2366:
2362:
2359:
2358:
2354:
2351:
2350:
2346:
2345:
2342:
2338:
2335:
2332:
2327:
2323:
2319:
2314:
2310:
2289:
2288:
2287:
2286:
2284:
2282:
2278:
2270:
2266:
2265:
2264:
2263:
2260:
2257:
2255:
2251:
2247:
2239:
2235:
2232:
2230:
2226:
2223:
2221:
2217:
2215:
2211:
2209:
2205:
2204:
2199:
2195:
2191:
2184:
2179:
2177:
2172:
2170:
2165:
2164:
2161:
2150:
2143:
2140:
2134:
2129:
2125:
2121:
2117:
2110:
2107:
2102:
2098:
2094:
2090:
2086:
2082:
2074:
2072:
2068:
2062:
2057:
2053:
2049:
2045:
2038:
2036:
2032:
2027:
2023:
2019:
2015:
2011:
2007:
2003:
1996:
1993:
1988:
1984:
1979:
1974:
1970:
1966:
1962:
1958:
1954:
1947:
1945:
1941:
1936:
1932:
1928:
1924:
1920:
1916:
1912:
1908:
1902:
1900:
1896:
1891:
1885:
1881:
1876:
1875:
1869:
1863:
1861:
1859:
1855:
1850:
1846:
1842:
1838:
1834:
1830:
1826:
1819:
1817:
1813:
1808:
1804:
1800:
1796:
1792:
1788:
1784:
1780:
1773:
1771:
1769:
1767:
1763:
1752:
1748:
1744:
1740:
1733:
1729:
1723:
1721:
1717:
1712:
1706:
1702:
1698:
1697:Tenontosaurus
1691:
1688:
1683:
1679:
1675:
1671:
1667:
1663:
1659:
1652:
1649:
1644:
1640:
1635:
1630:
1625:
1620:
1616:
1612:
1608:
1601:
1599:
1595:
1590:
1586:
1582:
1578:
1574:
1570:
1562:
1559:
1554:
1550:
1545:
1540:
1535:
1530:
1526:
1522:
1518:
1511:
1509:
1507:
1505:
1503:
1499:
1494:
1490:
1485:
1480:
1476:
1475:
1470:
1463:
1460:
1453:
1451:
1449:
1448:
1447:Oryctodromeus
1443:
1435:
1433:
1431:
1427:
1426:
1421:
1417:
1413:
1412:
1407:
1406:
1401:
1397:
1396:
1391:
1390:
1385:
1381:
1380:
1379:Zephyrosaurus
1375:
1374:
1373:Oryctodromeus
1369:
1368:
1363:
1359:
1355:
1351:
1350:
1345:
1344:
1339:
1338:
1333:
1332:
1327:
1322:
1320:
1319:
1314:
1310:
1306:
1302:
1298:
1294:
1290:
1286:
1282:
1278:
1274:
1269:
1261:
1254:
1253:
1245:
1244:
1236:
1235:
1227:
1226:
1218:
1217:
1209:
1208:
1200:
1199:
1191:
1190:
1182:
1181:
1173:
1172:
1164:
1163:
1155:
1154:
1151:
1150:
1149:
1148:Zephyrosaurus
1142:
1141:
1138:
1137:
1134:
1133:
1132:
1125:
1124:
1121:
1120:
1117:
1112:
1111:
1108:
1107:
1104:
1103:
1102:
1095:
1094:
1088:
1087:
1084:
1083:
1075:
1074:
1071:
1070:
1069:
1068:Oryctodromeus
1062:
1061:
1058:
1057:
1054:
1053:
1052:
1051:Koreanosaurus
1045:
1044:
1038:
1037:
1031:
1030:
1027:
1026:
1018:
1017:
1014:
1013:
1012:
1005:
1004:
1001:
1000:
997:
996:
995:
988:
987:
981:
980:
974:
971:
970:
967:
966:
958:
957:
954:
953:
952:
945:
944:
941:
940:
937:
936:
935:
928:
927:
924:
923:
920:
919:
918:
911:
910:
907:
906:
903:
902:
901:
894:
893:
890:
889:
886:
885:
884:
877:
876:
870:
867:
866:
860:
857:
856:
853:
852:
844:
843:
840:
839:
833:
832:
829:
828:
825:
824:
823:
822:Hypsilophodon
816:
815:
809:
808:
802:
801:
798:
797:
794:
793:
792:
785:
784:
778:
777:
774:
773:
765:
764:
761:
760:
759:
752:
751:
748:
747:
744:
743:
742:
735:
734:
728:
725:
724:
718:
717:
714:
713:
710:
709:
708:
701:
700:
694:
693:
690:
689:
681:
680:
677:
676:
675:
668:
667:
664:
663:
660:
659:
658:
657:Hexinlusaurus
651:
650:
644:
643:
637:
636:
633:
632:
629:
628:
627:
620:
619:
613:
612:
609:
608:
605:
604:
603:
602:Lesothosaurus
596:
595:
589:
586:
585:
581:
579:
575:
571:
567:
566:Hypsilophodon
563:
559:
555:
554:
550:, as long as
549:
548:
543:
542:
537:
533:
529:
528:
527:Hypsilophodon
523:
522:
517:
513:
509:
505:
504:
499:
498:
493:
489:
485:
481:
480:North America
477:
473:
469:
465:
453:
447:
444:
439:
436:
435:
433:
430:
426:
418:
417:
413:
411:
410:
406:
404:
403:
399:
396:
395:
394:Oryctodromeus
391:
388:
387:
386:Nevadadromeus
383:
380:
379:
375:
372:
371:
367:
365:
364:
360:
357:
356:
352:
349:
348:
344:
343:
339:
336:
332:
331:
330:Zephyrosaurus
327:
325:
324:
323:Oryctodromeus
320:
318:
317:
313:
310:
309:
308:Nevadadromeus
305:
303:
302:
301:Koreanosaurus
298:
296:
295:
291:
290:
287:
282:
279:
278:
276:
271:
267:
263:
258:
252:
249:
248:
245:
239:
236:
233:
232:
229:
223:
220:
217:
216:
213:
207:
204:
201:
200:
197:
194:
191:
188:
187:
184:
181:
178:
177:
174:
171:
168:
167:
164:
161:
158:
157:
152:
147:
143:
140:
136:
135:
129:
125:
120:
113:
108:
103:
98:
93:
88:
83:
78:
73:
68:
63:
58:
52:
45:
41:
33:
30:
19:
3249:
3191:Silesauridae
3162:
3155:
3147:
3142:Ajkaceratops
3140:
3130:
3118:
3111:
3104:
3097:
3090:
3085:Notoceratops
3083:
3076:
3071:Gongbusaurus
3069:
3064:Geranosaurus
3062:
3055:
3048:
3041:
3034:
3027:
3019:Nomina dubia
3017:
2967:
2855:
2847:
2840:
2835:Parksosaurus
2833:
2826:
2819:
2812:
2804:
2796:
2790:Jeholosaurus
2788:
2780:
2773:
2765:
2757:
2750:
2742:
2730:
2723:
2718:Sanxiasaurus
2716:
2709:
2702:
2697:Minimocursor
2695:
2688:
2681:
2674:
2667:
2611:Ankylosauria
2600:Ankylosauria
2587:
2580:
2573:
2566:
2542:
2535:
2528:
2521:
2514:
2507:
2500:
2493:
2474:Technosaurus
2472:
2466:Soumyasaurus
2464:
2456:
2448:
2442:Pisanosaurus
2440:
2432:
2424:
2417:
2410:
2402:
2396:Ignotosaurus
2394:
2386:
2378:
2371:
2363:
2355:
2347:
2331:Ornithischia
2318:Ornithischia
2281:Ornithischia
2233:
2224:
2190:Ornithischia
2148:
2142:
2123:
2119:
2109:
2084:
2080:
2051:
2047:
2009:
2005:
1995:
1960:
1956:
1918:
1914:
1910:
1873:
1832:
1828:
1824:
1790:
1786:
1782:
1778:
1754:. Retrieved
1742:
1738:
1700:
1696:
1690:
1665:
1661:
1651:
1614:
1610:
1572:
1568:
1561:
1524:
1520:
1472:
1462:
1445:
1439:
1436:Paleoecology
1423:
1409:
1403:
1399:
1393:
1389:Parksosaurus
1387:
1377:
1371:
1365:
1357:
1353:
1347:
1341:
1335:
1329:
1323:
1318:Parksosaurus
1316:
1313:T. neglectus
1312:
1308:
1304:
1300:
1297:T. neglectus
1296:
1292:
1284:
1273:paraphyletic
1265:
1146:
1145:
1129:
1128:
1115:
1099:
1098:
1066:
1065:
1049:
1048:
1009:
1008:
992:
991:
949:
948:
932:
931:
915:
914:
900:Parksosaurus
898:
897:
881:
880:
858:
836:
820:
819:
789:
788:
756:
755:
741:Jeholosaurus
739:
738:
705:
704:
672:
671:
655:
654:
624:
623:
600:
599:
573:
569:
565:
560:fell within
557:
551:
545:
539:
525:
521:Parksosaurus
519:
511:
501:
495:
463:
462:
451:
445:
437:
414:
407:
402:Parksosaurus
400:
392:
384:
378:Jeholosaurus
376:
368:
361:
353:
345:
337:
328:
321:
314:
306:
299:
292:
285:
280:
273:Subfamilies
256:
234:
218:
212:Ornithischia
202:
189:
132:
49:130–66
29:
3274:Wikispecies
3120:Trimucrodon
3092:Siluosaurus
3050:Fabrosaurus
3043:Craspedodon
3036:Bienosaurus
2879:Ornithopoda
2868:Ornithopoda
2767:Changmiania
2732:Yandusaurus
2669:Agilisaurus
2634:Stegosauria
2623:Stegosauria
2555:Thyreophora
2434:Lutungutali
2404:Kwanasaurus
2357:Asilisaurus
2349:Amanasaurus
2012:(1): 1–40.
1921:(2): 1–56.
1783:Bugenasaura
1416:Orodrominae
1362:Orodrominae
1305:Bugenasaura
973:Orodrominae
674:Yandusaurus
626:Agilisaurus
355:Changmiania
281:Orodrominae
18:Orodrominae
3363:Categories
3174:Other taxa
3113:Tichosteus
3106:Tatisaurus
2911:Ceratopsia
2900:Ceratopsia
2849:Yueosaurus
2821:Orodromeus
2806:Nanosaurus
2725:Xiaosaurus
2704:Nanosaurus
2589:Yuxisaurus
2568:Emausaurus
2544:Tianyulong
2537:Pegomastax
2523:Lycorhinus
2509:Fruitadens
2458:Silesaurus
2450:Sacisaurus
2426:Lewisuchus
2290:see below↓
2238:Dinosauria
2220:Sauropsida
1756:2007-03-10
1527:: e12362.
1454:References
1411:Orodromeus
1367:Orodromeus
1334:, but not
1131:Orodromeus
791:Nanosaurus
758:Yueosaurus
503:Orodromeus
472:Cretaceous
416:Yueosaurus
316:Orodromeus
244:Pyrodontia
196:Dinosauria
3265:Q13574271
3078:Laosaurus
2711:Phyllodon
2502:Echinodon
2388:Gamatavus
2206:Kingdom:
2101:129160518
1589:129160518
1493:1932-8486
1422:) to the
1266:Although
532:PhyloCode
476:East Asia
470:from the
262:Sternberg
169:Kingdom:
163:Eukaryota
3294:42418162
3259:Wikidata
3029:Alocodon
3007:See also
2530:Manidens
2373:Eocursor
2365:Diodorus
2214:Chordata
2212:Phylum:
2208:Animalia
2026:86728076
1987:17374596
1935:86339025
1911:Zalmoxes
1849:86754247
1807:84273584
1682:90008574
1643:26713260
1553:34966571
1442:burrowed
1398:. Brown
838:Cerapoda
544:but not
429:Synonyms
250:Family:
183:Chordata
179:Phylum:
173:Animalia
159:Domain:
3333:4143967
3307:6141946
3157:Jakapil
2218:Class:
1978:2176205
1634:4690359
1544:8667728
1408:to the
1352:. Boyd
1289:derived
1262:History
3320:122681
2099:
2024:
1985:
1975:
1933:
1886:
1882:–412.
1847:
1805:
1707:
1680:
1641:
1631:
1587:
1551:
1541:
1491:
1400:et al.
1376:, and
1358:et al.
1354:et al.
1277:clades
574:et al.
570:et al.
454:, 2012
452:et al.
288:, 2013
284:Brown
3346:64386
3315:IRMNG
2234:Clade
2225:Clade
2097:S2CID
2022:S2CID
1931:S2CID
1845:S2CID
1803:S2CID
1735:(PDF)
1678:S2CID
1611:PeerJ
1585:S2CID
1521:PeerJ
1346:, or
524:than
286:et al
235:Clade
219:Clade
203:Clade
190:Clade
40:Early
3302:GBIF
2932:see
2909:see
2877:see
2782:Haya
2775:Fona
2632:see
2609:see
2267:see
1983:PMID
1884:ISBN
1781:and
1705:ISBN
1639:PMID
1549:PMID
1489:ISSN
1392:and
994:Haya
578:2018
536:2021
516:2002
508:2015
500:and
492:2013
488:1937
478:and
450:Han
370:Haya
363:Fona
266:1937
57:PreꞒ
3289:EoL
2128:doi
2089:doi
2056:doi
2052:163
2014:doi
1973:PMC
1965:doi
1961:274
1923:doi
1880:393
1837:doi
1795:doi
1785:".
1747:doi
1670:doi
1629:PMC
1619:doi
1577:doi
1539:PMC
1529:doi
1479:doi
1432:).
576:in
486:in
474:of
3365::
3343::
3330::
3317::
3304::
3291::
3276::
3261::
2236::
2227::
2124:93
2122:.
2118:.
2095:.
2085:33
2083:.
2070:^
2050:.
2046:.
2034:^
2020:.
2008:.
1981:.
1971:.
1959:.
1955:.
1943:^
1929:.
1917:.
1898:^
1857:^
1843:.
1833:32
1831:.
1815:^
1801:.
1791:29
1789:.
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1741:.
1737:.
1719:^
1676:.
1666:16
1664:.
1660:.
1637:.
1627:.
1613:.
1609:.
1597:^
1583:.
1573:33
1571:.
1547:.
1537:.
1523:.
1519:.
1501:^
1487:.
1477:.
1471:.
1370:,
1340:,
448:?
264:,
237::
221::
205::
192::
137:,
107:Pg
51:Ma
46:,
3152:?
2852:?
2809:?
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2793:?
2785:?
2770:?
2762:?
2477:?
2469:?
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2437:?
2429:?
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2399:?
2391:?
2383:?
2368:?
2360:?
2352:?
2182:e
2175:t
2168:v
2136:.
2130::
2103:.
2091::
2064:.
2058::
2028:.
2016::
2010:6
1989:.
1967::
1937:.
1925::
1919:1
1892:.
1851:.
1839::
1809:.
1797::
1759:.
1749::
1743:6
1713:.
1684:.
1672::
1645:.
1621::
1615:3
1591:.
1579::
1555:.
1531::
1525:9
1495:.
1481::
1271:(
419:?
397:?
389:?
381:?
373:?
358:?
350:?
311:?
254:†
241:†
225:†
209:†
112:N
102:K
97:J
92:T
87:P
82:C
77:D
72:S
67:O
62:Ꞓ
42:–
20:)
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