1630:
612:. Near the lower edge of the squamosal a clearly demarcated groove or depression is present. On the lower front of the nasal horn core, a vertical, slightly obliquely running, vein groove meets second vein groove, running horizontally. The epijugal forms an unusually pronounced sharp jugal horn. At its rear upper side the epijugal bears a pronounced process, pointing to behind. A depression on the top of the epijugal forms a contact facet with the jugal; a depression at its inner side forms a separate facet contacting the quadratojugal.
1636:
2186:
137:
2216:
2192:
442:
119:
705:
623:; small rounded processes pointed to above and behind into this opening, originating from the front lower edges. The strut between this opening and the nostril was narrow in side view and transversely thickened with a straight rear edge. The processes jutting into the nostrils had hollow outer sides but were far less excavated and much higher than with
635:
bore at least thirty-five tooth positions. The nasal horn was low, situated above the nostril and slightly recurved. It had a narrow rear edge and a transversely flattened point. The horns above the eyes were forward-curving and have been estimated at 80 cm (2.6 ft) long. The lower base of
515:, about 68.8 million years ago. It consists of a partial skeleton with much of the skull; the skull lacks the lower jaws but includes parts of the edges of the frill, large horns above the eyes, and a small horn above the nose, similar to the closely related
606:. The episquamosals, the epoccipitals of the squamosal, thus the skin ossifications lining and often protruding from the edge of the frill, have an extremely elongated base, and are flattened and spindly, touching each other as with
786:
Eberth, D.A.; Kamo, S.L. (2019). "High-precision U-Pb CA-ID-TIMS dating and chronostratigraphy of the dinosaur-rich
Horseshoe Canyon Formation (Upper Cretaceous, Campanian–Maastrichtian), Red Deer River valley, Alberta, Canada".
577:
has been estimated to have had an original length of around 3 m (9.8 ft). It would have been a large animal, measuring 8.5–9 metres (28–30 ft) in length and 11 metric tons (12 short tons) in body mass.
519:. At least seven neck and five back vertebrae, as well as several ribs and ossified tendons, were also recovered. The bones were largely found disarticulated. Because the specimen was found in weakly bedded
751:
Wu, X-C.; Brinkman, D.B.; Eberth, D.A.; Braman, D.R. (2007). "A new ceratopsid dinosaur (Ornithischia) from the uppermost
Horseshoe Canyon Formation (upper Maastrichtian), Alberta, Canada".
2355:
859:
Wick, S. L.; Lehman, T. M. (2013). "A new ceratopsian dinosaur from the
Javelina Formation (Maastrichtian) of West Texas and implications for chasmosaurine phylogeny".
2309:
2370:
640:
is a juvenile trait. Three bite marks can be observed above the eye, near the base of the left horn, which were interpreted as traces of scavenging. The
596:, obliquely protruding to above and behind in the bony nostril, does not have a groove or depression on its outer side contrary to the situation with
2375:
2296:
493:
2360:
1629:
843:
431:
951:
1635:
409:
2365:
2209:
718:
2380:
2385:
2185:
136:
438:
mounted an expedition to the Dry Island. The expedition's cook, Glen
Guthrie, rediscovered the skeleton by accident.
619:
was relatively flat and elongated. The depressions on the sides of the praemaxillae were connected through an oval
508:
435:
1042:
944:
602:; this process is exceptionally wide in side view; it also reaches above the level of the lower border of the
2350:
1160:
475:
911:
2236:
2322:
2219:
1069:
316:
2191:
2283:
868:
760:
553:
453:
452:
was named and described by Xiao-Chun Wu, Donald B. Brinkman, David A. Eberth and Dennis R. Braman in
293:
1325:
937:
547:
355:
2274:
2045:
1995:
1427:
892:
804:
345:
131:
2327:
835:
829:
412:
expedition discovered a large dinosaur skeleton in the Dry Island site, on the west bank of the
2314:
2128:
2066:
2029:
1503:
1390:
884:
839:
2158:
1956:
1781:
1483:
1178:
876:
796:
768:
710:
2052:
2004:
1963:
1899:
1802:
1753:
1455:
1379:
1334:
1208:
1194:
1153:
1027:
1011:
825:
527:
30:
872:
764:
2059:
2018:
1949:
1936:
1907:
1892:
1862:
1823:
1809:
1726:
1687:
1566:
1476:
1441:
1434:
1314:
1264:
1187:
1167:
682:
660:
589:
413:
268:
255:
213:
2344:
2137:
2116:
2086:
2077:
1977:
1816:
1795:
1767:
1760:
1746:
1739:
1545:
1534:
1527:
1469:
1462:
1448:
1406:
1341:
1307:
1278:
1231:
913:
Dinosaurs: The Most
Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages
808:
645:
585:
512:
426:
69:
896:
689:. In view of its greater age, the describing authors considered it more likely that
2151:
2102:
2095:
2011:
1984:
1970:
1878:
1851:
1844:
1837:
1788:
1774:
1666:
1653:
1584:
1573:
1558:
1520:
1512:
1494:
1399:
1365:
1348:
1300:
1293:
1249:
1054:
1002:
693:
was in fact basal to, lower in the evolutionary tree than, the other three genera.
673:
457:
405:
242:
197:
545:
Possible additional specimens, which have been variously included in the species
424:. Brown, however, neglected this discovery as he was more interested in the many
2268:
2144:
2038:
1921:
1885:
1708:
1420:
1285:
598:
593:
470:
380:
44:
441:
1914:
1830:
1680:
1413:
1201:
1135:
1122:
1081:
960:
880:
700:
608:
558:
430:
specimens present in the area. Unaware of Brown's find, in 2001 a team of the
387:
229:
89:
54:
2259:
664:
641:
148:
94:
38:
888:
800:
118:
2253:
1715:
1701:
1694:
1257:
993:
984:
500:
383:
181:
168:
84:
79:
64:
59:
49:
2301:
2109:
1271:
1215:
632:
417:
99:
74:
978:
588:
ceratopsians in unique features of the skull bones. In 2007, several
421:
158:
2230:
772:
644:
shows at least five episquamosals. Little has been preserved of the
574:
520:
486:
440:
376:
2288:
2234:
1651:
1120:
971:
933:
592:, unique derived traits, were established. The process of the
929:
636:
these horns was narrow and vertically directed, which with
474:, in reference to an older age relative to that form. The
386:
which lived in the area of North
America during the late
2243:
2127:
2085:
2076:
2028:
1994:
1935:
1861:
1725:
1664:
1583:
1544:
1502:
1493:
1389:
1363:
1324:
1229:
1177:
1133:
1080:
1053:
1026:
667:analysis, it was recovered as a close relative of
481:, means "of the dry island", from Greek ξηρός,
945:
8:
746:
744:
742:
740:
738:
736:
734:
542:has not been followed by other researchers.
2356:Late Cretaceous dinosaurs of North America
2231:
2082:
1941:
1731:
1672:
1661:
1648:
1550:
1499:
1371:
1241:
1237:
1145:
1141:
1130:
1117:
1059:
1032:
1023:
968:
952:
938:
930:
820:
818:
117:
20:
557:, are known from the same time period in
464:. The generic name combines a Greek ἠώς,
523:, many of the bones were badly crushed.
507:, was found in a layer of the uppermost
375:(meaning "dawn three-horned face") is a
834:. Princeton University Press. pp.
730:
648:forming the centre of the neck shield.
494:Dry Island Buffalo Jump Provincial Park
831:The Princeton Field Guide to Dinosaurs
2371:Maastrichtian genus first appearances
492:, "island" and is a reference to the
468:, "dawn", with the name of the genus
432:Royal Tyrrell Museum of Palaeontology
7:
789:Canadian Journal of Earth Sciences
753:Canadian Journal of Earth Sciences
410:American Museum of Natural History
390:period. The only named species is
14:
2215:
2214:
2190:
2184:
1634:
1628:
719:Timeline of ceratopsian research
703:
135:
2376:Maastrichtian genus extinctions
496:where its remains were found.
1:
2361:Fossil taxa described in 2007
910:Holtz, Thomas R. Jr. (2012).
621:fenestra interpraemaxillaris
604:fenestra interpraemaxillaris
2402:
659:was in 2007 placed in the
509:Horseshoe Canyon Formation
462:Eotriceratops xerinsularis
393:Eotriceratops xerinsularis
361:Sullivan & Lucas, 2010
329:Eotriceratops xerinsularis
16:Extinct genus of dinosaurs
2204:
2182:
1944:
1734:
1675:
1660:
1647:
1625:
1553:
1374:
1244:
1240:
1148:
1144:
1129:
1116:
1062:
1035:
1022:
967:
881:10.1007/s00114-013-1063-0
681:. It would have been the
436:Canadian Museum of Nature
351:
344:
322:
315:
132:Scientific classification
130:
125:
116:
23:
534:, but this inclusion of
532:Triceratops xerinsularis
2366:Paleontology in Alberta
1161:Micropachycephalosaurus
561:and may also belong to
2381:Horseshoe Canyon fauna
801:10.1139/cjes-2019-0019
538:in the existing genus
446:
404:In early August 1910,
2323:Paleobiology Database
511:, dated to the early
444:
2386:Ornithischian genera
921:Winter 2011 Appendix
609:Torosaurus utahensis
554:Torosaurus utahensis
530:renamed the species
400:Discovery and naming
308:E. xerinsularis
126:Reconstructed skull
1326:Archaeoceratopsidae
873:2013NW....100..667W
861:Naturwissenschaften
765:2007CaJES..44.1243W
584:differs from other
548:Ojoceratops fowleri
356:Ojoceratops fowleri
2046:Crittendenceratops
1996:Albertaceratopsini
447:
2338:
2337:
2237:Taxon identifiers
2228:
2227:
2200:
2199:
2180:
2179:
2176:
2175:
2172:
2171:
2168:
2167:
2129:Pachyrhinosaurini
2067:Yehuecauhceratops
2030:Nasutoceratopsini
1931:
1930:
1643:
1642:
1623:
1622:
1619:
1618:
1615:
1614:
1611:
1610:
1607:
1606:
1603:
1602:
1504:Protoceratopsidae
1391:Leptoceratopsidae
1359:
1358:
1225:
1224:
1112:
1111:
1108:
1107:
1104:
1103:
1100:
1099:
845:978-0-691-13720-9
795:(10): 1220–1237.
368:
367:
362:
296:
2393:
2331:
2330:
2318:
2317:
2305:
2304:
2292:
2291:
2279:
2278:
2277:
2264:
2263:
2262:
2232:
2218:
2217:
2195:
2194:
2188:
2159:Pachyrhinosaurus
2083:
1957:Machairoceratops
1942:
1782:Coahuilaceratops
1732:
1673:
1662:
1649:
1638:
1633:
1632:
1551:
1500:
1484:Zhuchengceratops
1372:
1242:
1238:
1179:Chaoyangsauridae
1146:
1142:
1131:
1118:
1060:
1033:
1024:
1017:
1016:
969:
954:
947:
940:
931:
924:
923:
918:
907:
901:
900:
856:
850:
849:
822:
813:
812:
783:
777:
776:
759:(9): 1243–1265.
748:
713:
711:Dinosaurs portal
708:
707:
706:
360:
331:
327:
287:
280:
267:
254:
241:
228:
212:
196:
140:
139:
121:
111:
41:
29:Temporal range:
21:
2401:
2400:
2396:
2395:
2394:
2392:
2391:
2390:
2341:
2340:
2339:
2334:
2326:
2321:
2313:
2308:
2300:
2295:
2287:
2282:
2273:
2272:
2267:
2258:
2257:
2252:
2239:
2229:
2224:
2196:
2189:
2164:
2123:
2072:
2053:Furcatoceratops
2024:
2005:Albertaceratops
1990:
1964:Menefeeceratops
1927:
1900:Tatankaceratops
1857:
1803:Mercuriceratops
1754:Arrhinoceratops
1721:
1669:
1656:
1639:
1627:
1599:
1579:
1540:
1489:
1456:Montanoceratops
1385:
1380:Graciliceratops
1368:
1355:
1335:Archaeoceratops
1320:
1234:
1221:
1209:Xuanhuaceratops
1195:Hualianceratops
1173:
1154:Albalophosaurus
1138:
1125:
1096:
1076:
1049:
1043:Avemetatarsalia
1028:Avemetatarsalia
1018:
1012:Marginocephalia
974:
973:
963:
958:
928:
927:
916:
909:
908:
904:
858:
857:
853:
846:
824:
823:
816:
785:
784:
780:
773:10.1139/E07-011
750:
749:
732:
727:
709:
704:
702:
699:
654:
571:
528:Gregory S. Paul
402:
379:of herbivorous
340:
333:
325:
324:
311:
286:
278:
265:
252:
239:
226:
210:
194:
134:
112:
110:
109:
108:
107:
102:
97:
92:
87:
82:
77:
72:
67:
62:
57:
52:
47:
36:
35:
34:
31:Late Cretaceous
27:
17:
12:
11:
5:
2399:
2397:
2389:
2388:
2383:
2378:
2373:
2368:
2363:
2358:
2353:
2351:Chasmosaurines
2343:
2342:
2336:
2335:
2333:
2332:
2319:
2306:
2293:
2280:
2265:
2249:
2247:
2241:
2240:
2235:
2226:
2225:
2223:
2222:
2212:
2205:
2202:
2201:
2198:
2197:
2183:
2181:
2178:
2177:
2174:
2173:
2170:
2169:
2166:
2165:
2163:
2162:
2155:
2148:
2141:
2133:
2131:
2125:
2124:
2122:
2121:
2113:
2106:
2099:
2091:
2089:
2080:
2074:
2073:
2071:
2070:
2063:
2060:Nasutoceratops
2056:
2049:
2042:
2034:
2032:
2026:
2025:
2023:
2022:
2019:Medusaceratops
2015:
2008:
2000:
1998:
1992:
1991:
1989:
1988:
1981:
1974:
1967:
1960:
1953:
1950:Diabloceratops
1945:
1939:
1937:Centrosaurinae
1933:
1932:
1929:
1928:
1926:
1925:
1918:
1911:
1908:Titanoceratops
1904:
1896:
1893:Regaliceratops
1889:
1882:
1875:
1867:
1865:
1863:Triceratopsini
1859:
1858:
1856:
1855:
1848:
1841:
1834:
1827:
1824:Sierraceratops
1820:
1813:
1810:Navajoceratops
1806:
1799:
1792:
1785:
1778:
1771:
1764:
1757:
1750:
1743:
1735:
1729:
1727:Chasmosaurinae
1723:
1722:
1720:
1719:
1712:
1705:
1698:
1691:
1688:Brachyceratops
1684:
1676:
1670:
1665:
1658:
1657:
1652:
1645:
1644:
1641:
1640:
1626:
1624:
1621:
1620:
1617:
1616:
1613:
1612:
1609:
1608:
1605:
1604:
1601:
1600:
1598:
1597:
1596:
1595:
1589:
1587:
1581:
1580:
1578:
1577:
1570:
1567:Turanoceratops
1563:
1554:
1548:
1542:
1541:
1539:
1538:
1531:
1524:
1517:
1508:
1506:
1497:
1491:
1490:
1488:
1487:
1480:
1477:Unescoceratops
1473:
1466:
1459:
1452:
1445:
1442:Ischioceratops
1438:
1435:Gryphoceratops
1431:
1424:
1417:
1410:
1403:
1395:
1393:
1387:
1386:
1384:
1383:
1375:
1369:
1364:
1361:
1360:
1357:
1356:
1354:
1353:
1345:
1338:
1330:
1328:
1322:
1321:
1319:
1318:
1315:Sasayamagnomus
1311:
1304:
1297:
1290:
1282:
1275:
1268:
1265:Auroraceratops
1261:
1254:
1245:
1235:
1230:
1227:
1226:
1223:
1222:
1220:
1219:
1212:
1205:
1198:
1191:
1188:Chaoyangsaurus
1183:
1181:
1175:
1174:
1172:
1171:
1168:Psittacosaurus
1164:
1157:
1149:
1139:
1134:
1127:
1126:
1121:
1114:
1113:
1110:
1109:
1106:
1105:
1102:
1101:
1098:
1097:
1095:
1094:
1093:
1092:
1086:
1084:
1078:
1077:
1075:
1074:
1073:
1072:
1063:
1057:
1051:
1050:
1048:
1047:
1046:
1045:
1036:
1030:
1020:
1019:
1015:
1014:
1005:
996:
987:
981:
972:
965:
964:
959:
957:
956:
949:
942:
934:
926:
925:
902:
851:
844:
814:
778:
729:
728:
726:
723:
722:
721:
715:
714:
698:
695:
683:sister species
661:Chasmosaurinae
653:
650:
646:parietal bones
590:autapomorphies
570:
567:
505:RTMP 2002.57.5
414:Red Deer River
401:
398:
366:
365:
364:
363:
349:
348:
342:
341:
334:
320:
319:
313:
312:
304:
302:
298:
297:
276:
272:
271:
269:Triceratopsini
263:
259:
258:
256:Chasmosaurinae
250:
246:
245:
237:
233:
232:
224:
217:
216:
214:Neornithischia
208:
201:
200:
192:
185:
184:
179:
172:
171:
166:
162:
161:
156:
152:
151:
146:
142:
141:
128:
127:
123:
122:
114:
113:
105:
104:
103:
98:
93:
88:
83:
78:
73:
68:
63:
58:
53:
48:
43:
42:
28:
15:
13:
10:
9:
6:
4:
3:
2:
2398:
2387:
2384:
2382:
2379:
2377:
2374:
2372:
2369:
2367:
2364:
2362:
2359:
2357:
2354:
2352:
2349:
2348:
2346:
2329:
2324:
2320:
2316:
2311:
2307:
2303:
2298:
2294:
2290:
2285:
2281:
2276:
2275:Eotriceratops
2270:
2266:
2261:
2255:
2251:
2250:
2248:
2246:
2245:Eotriceratops
2242:
2238:
2233:
2221:
2213:
2211:
2207:
2206:
2203:
2193:
2187:
2161:
2160:
2156:
2154:
2153:
2149:
2147:
2146:
2142:
2140:
2139:
2138:Achelousaurus
2135:
2134:
2132:
2130:
2126:
2119:
2118:
2117:Styracosaurus
2114:
2112:
2111:
2107:
2105:
2104:
2100:
2098:
2097:
2093:
2092:
2090:
2088:
2087:Centrosaurini
2084:
2081:
2079:
2078:Eucentrosaura
2075:
2069:
2068:
2064:
2062:
2061:
2057:
2055:
2054:
2050:
2048:
2047:
2043:
2041:
2040:
2036:
2035:
2033:
2031:
2027:
2021:
2020:
2016:
2014:
2013:
2009:
2007:
2006:
2002:
2001:
1999:
1997:
1993:
1987:
1986:
1982:
1980:
1979:
1978:Wendiceratops
1975:
1973:
1972:
1968:
1966:
1965:
1961:
1959:
1958:
1954:
1952:
1951:
1947:
1946:
1943:
1940:
1938:
1934:
1924:
1923:
1919:
1917:
1916:
1912:
1910:
1909:
1905:
1902:
1901:
1897:
1895:
1894:
1890:
1888:
1887:
1883:
1881:
1880:
1876:
1874:
1873:
1872:Eotriceratops
1869:
1868:
1866:
1864:
1860:
1854:
1853:
1849:
1847:
1846:
1842:
1840:
1839:
1835:
1833:
1832:
1828:
1826:
1825:
1821:
1819:
1818:
1817:Pentaceratops
1814:
1812:
1811:
1807:
1805:
1804:
1800:
1798:
1797:
1796:Kosmoceratops
1793:
1791:
1790:
1786:
1784:
1783:
1779:
1777:
1776:
1772:
1770:
1769:
1768:Bravoceratops
1765:
1763:
1762:
1761:Bisticeratops
1758:
1756:
1755:
1751:
1749:
1748:
1747:Anchiceratops
1744:
1742:
1741:
1740:Agujaceratops
1737:
1736:
1733:
1730:
1728:
1724:
1718:
1717:
1713:
1711:
1710:
1706:
1704:
1703:
1699:
1697:
1696:
1692:
1690:
1689:
1685:
1683:
1682:
1678:
1677:
1674:
1671:
1668:
1663:
1659:
1655:
1650:
1646:
1637:
1631:
1593:
1592:
1591:
1590:
1588:
1586:
1582:
1576:
1575:
1571:
1569:
1568:
1564:
1561:
1560:
1556:
1555:
1552:
1549:
1547:
1546:Ceratopsoidea
1543:
1537:
1536:
1535:Protoceratops
1532:
1530:
1529:
1528:Breviceratops
1525:
1523:
1522:
1518:
1515:
1514:
1510:
1509:
1507:
1505:
1501:
1498:
1496:
1492:
1486:
1485:
1481:
1479:
1478:
1474:
1472:
1471:
1470:Udanoceratops
1467:
1465:
1464:
1463:Prenoceratops
1460:
1458:
1457:
1453:
1451:
1450:
1449:Leptoceratops
1446:
1444:
1443:
1439:
1437:
1436:
1432:
1430:
1429:
1425:
1423:
1422:
1418:
1416:
1415:
1411:
1409:
1408:
1407:Bainoceratops
1404:
1402:
1401:
1397:
1396:
1394:
1392:
1388:
1382:
1381:
1377:
1376:
1373:
1370:
1367:
1362:
1351:
1350:
1346:
1344:
1343:
1342:Helioceratops
1339:
1337:
1336:
1332:
1331:
1329:
1327:
1323:
1317:
1316:
1312:
1310:
1309:
1308:Mosaiceratops
1305:
1303:
1302:
1298:
1296:
1295:
1291:
1288:
1287:
1283:
1281:
1280:
1279:Koreaceratops
1276:
1274:
1273:
1269:
1267:
1266:
1262:
1260:
1259:
1255:
1252:
1251:
1247:
1246:
1243:
1239:
1236:
1233:
1232:Neoceratopsia
1228:
1218:
1217:
1213:
1211:
1210:
1206:
1204:
1203:
1199:
1197:
1196:
1192:
1190:
1189:
1185:
1184:
1182:
1180:
1176:
1170:
1169:
1165:
1163:
1162:
1158:
1156:
1155:
1151:
1150:
1147:
1143:
1140:
1137:
1132:
1128:
1124:
1119:
1115:
1090:
1089:
1088:
1087:
1085:
1083:
1079:
1071:
1067:
1066:
1065:
1064:
1061:
1058:
1056:
1052:
1044:
1040:
1039:
1038:
1037:
1034:
1031:
1029:
1025:
1021:
1013:
1009:
1006:
1004:
1000:
997:
995:
991:
988:
986:
982:
980:
976:
975:
970:
966:
962:
955:
950:
948:
943:
941:
936:
935:
932:
922:
915:
914:
906:
903:
898:
894:
890:
886:
882:
878:
874:
870:
867:(7): 667–82.
866:
862:
855:
852:
847:
841:
837:
833:
832:
827:
821:
819:
815:
810:
806:
802:
798:
794:
790:
782:
779:
774:
770:
766:
762:
758:
754:
747:
745:
743:
741:
739:
737:
735:
731:
724:
720:
717:
716:
712:
701:
696:
694:
692:
691:Eotriceratops
688:
684:
680:
676:
675:
670:
666:
662:
658:
657:Eotriceratops
651:
649:
647:
643:
639:
634:
630:
626:
622:
618:
617:Eotriceratops
615:The snout of
613:
611:
610:
605:
601:
600:
595:
591:
587:
586:chasmosaurine
583:
582:Eotriceratops
579:
576:
573:The holotype
568:
566:
564:
563:Eotriceratops
560:
556:
555:
550:
549:
543:
541:
537:
536:Eotriceratops
533:
529:
524:
522:
518:
514:
513:Maastrichtian
510:
506:
502:
497:
495:
491:
488:
485:, "dry", and
484:
480:
477:
476:specific name
473:
472:
467:
463:
459:
455:
451:
450:Eotriceratops
443:
439:
437:
433:
429:
428:
427:Albertosaurus
423:
419:
415:
411:
407:
399:
397:
395:
394:
389:
385:
382:
378:
374:
373:
372:Eotriceratops
358:
357:
353:
352:
350:
347:
343:
338:
332:
330:
321:
318:
317:Binomial name
314:
310:
309:
303:
300:
299:
295:
291:
285:
284:
283:Eotriceratops
277:
274:
273:
270:
264:
261:
260:
257:
251:
248:
247:
244:
238:
235:
234:
231:
225:
222:
219:
218:
215:
209:
206:
203:
202:
199:
193:
190:
187:
186:
183:
180:
177:
174:
173:
170:
167:
164:
163:
160:
157:
154:
153:
150:
147:
144:
143:
138:
133:
129:
124:
120:
115:
101:
96:
91:
86:
81:
76:
71:
66:
61:
56:
51:
46:
40:
32:
26:
25:Eotriceratops
22:
19:
2244:
2157:
2152:Stellasaurus
2150:
2143:
2136:
2115:
2108:
2103:Coronosaurus
2101:
2096:Centrosaurus
2094:
2065:
2058:
2051:
2044:
2037:
2017:
2012:Lokiceratops
2010:
2003:
1985:Xenoceratops
1983:
1976:
1971:Sinoceratops
1969:
1962:
1955:
1948:
1920:
1913:
1906:
1898:
1891:
1884:
1879:Nedoceratops
1877:
1871:
1870:
1852:Vagaceratops
1850:
1845:Utahceratops
1843:
1838:Terminocavus
1836:
1829:
1822:
1815:
1808:
1801:
1794:
1789:Judiceratops
1787:
1780:
1775:Chasmosaurus
1773:
1766:
1759:
1752:
1745:
1738:
1714:
1707:
1700:
1693:
1686:
1679:
1667:Ceratopsidae
1654:Ceratopsidae
1585:Ceratopsidae
1574:Zuniceratops
1572:
1565:
1559:Ajkaceratops
1557:
1533:
1526:
1521:Bagaceratops
1519:
1513:Ajkaceratops
1511:
1495:Coronosauria
1482:
1475:
1468:
1461:
1454:
1447:
1440:
1433:
1426:
1419:
1412:
1405:
1400:Asiaceratops
1398:
1378:
1366:Euceratopsia
1349:Yamaceratops
1347:
1340:
1333:
1313:
1306:
1301:Microceratus
1299:
1294:Liaoceratops
1292:
1284:
1277:
1270:
1263:
1256:
1250:Ajkaceratops
1248:
1214:
1207:
1200:
1193:
1186:
1166:
1159:
1152:
1070:Ornithischia
1055:Ornithischia
1007:
1003:Ornithischia
998:
989:
920:
912:
905:
864:
860:
854:
830:
792:
788:
781:
756:
752:
690:
686:
678:
674:Nedoceratops
672:
668:
656:
655:
637:
628:
624:
620:
616:
614:
607:
603:
597:
581:
580:
572:
562:
552:
546:
544:
539:
535:
531:
525:
516:
504:
498:
489:
482:
479:xerinsularis
478:
469:
465:
461:
458:type species
449:
448:
425:
416:in southern
406:Barnum Brown
403:
392:
391:
371:
370:
369:
354:
336:
328:
323:
307:
306:
289:
282:
281:
243:Ceratopsidae
220:
204:
198:Ornithischia
188:
175:
24:
18:
2269:Wikispecies
2145:Einiosaurus
2039:Avaceratops
1922:Triceratops
1886:Ojoceratops
1709:Monoclonius
1421:Ferrisaurus
1286:Kulceratops
826:Paul, G. S.
687:Triceratops
669:Triceratops
638:Triceratops
625:Triceratops
599:Triceratops
594:praemaxilla
569:Description
540:Triceratops
517:Triceratops
471:Triceratops
445:Restoration
381:ceratopsian
249:Subfamily:
2345:Categories
2208:See also:
1915:Torosaurus
1831:Spiclypeus
1681:Agathaumas
1594:see below↓
1414:Cerasinops
1202:Stenopelix
1136:Ceratopsia
1123:Ceratopsia
1091:see below↓
1082:Ceratopsia
994:Dinosauria
961:Ceratopsia
725:References
679:Torosaurus
629:Torosaurus
559:New Mexico
503:specimen,
408:during an
388:Cretaceous
230:Ceratopsia
182:Dinosauria
37:68.8
977:Kingdom:
809:210299227
665:cladistic
652:Phylogeny
642:squamosal
526:In 2010,
384:dinosaurs
301:Species:
155:Kingdom:
149:Eukaryota
2254:Wikidata
2220:Category
2210:Timeline
1716:Polyonax
1702:Dysganus
1695:Ceratops
1258:Aquilops
985:Chordata
983:Phylum:
979:Animalia
897:16048008
889:23728202
828:(2010).
697:See also
501:holotype
434:and the
346:Synonyms
236:Family:
169:Chordata
165:Phylum:
159:Animalia
145:Domain:
2315:1472635
2302:4965816
2289:4531640
2260:Q132611
2110:Spinops
1428:Gremlin
1216:Yinlong
869:Bibcode
761:Bibcode
663:. In a
633:maxilla
418:Alberta
326:†
305:†
275:Genus:
262:Tribe:
106:↓
2328:109480
895:
887:
842:
807:
631:. The
490:insula
456:. The
422:Canada
339:, 2006
337:et al.
290:et al.
2310:IRMNG
1008:Clade
999:Clade
990:Clade
917:(PDF)
893:S2CID
805:S2CID
575:skull
521:shale
487:Latin
483:xèros
377:genus
221:Clade
205:Clade
189:Clade
176:Clade
2297:GBIF
1068:see
1041:see
885:PMID
840:ISBN
677:and
551:and
499:The
454:2007
294:2006
45:PreꞒ
2284:EoL
1272:Beg
877:doi
865:100
836:265
797:doi
769:doi
685:of
627:or
466:èos
460:is
335:Wu
288:Wu
2347::
2325::
2312::
2299::
2286::
2271::
2256::
1010::
1001::
992::
919:.
891:.
883:.
875:.
863:.
838:.
817:^
803:.
793:57
791:.
767:.
757:44
755:.
733:^
671:,
565:.
420:,
396:.
359:?
292:,
223::
207::
191::
178::
95:Pg
39:Ma
33:,
2120:?
1903:?
1562:?
1516:?
1352:?
1289:?
1253:?
953:e
946:t
939:v
899:.
879::
871::
848:.
811:.
799::
775:.
771::
763::
279:†
266:†
253:†
240:†
227:†
211:†
195:†
100:N
90:K
85:J
80:T
75:P
70:C
65:D
60:S
55:O
50:Ꞓ
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