Knowledge (XXG)

Foraminacephale

Source πŸ“

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of the specimens showed that the domes became less porous with age - the smallest specimen's skull was 1.67% empty space, while the largest specimen's skull was 0.25% empty space. Generally, the frontal part of the dome was more porous than the parietal part.
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is particularly rich in pachycephalosaur remains; 70% of all known pachycephalosaur fossils come from this region. Because of a lack of understanding of pachycephalosaur ontogeny, various authors have assigned this material to anywhere from a single species,
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where they are round, and they seal shut very early in ontogeny as opposed to remaining open more-or-less throughout the animal's lifespan. The amount of empty space in the skull roof was also smaller relative to
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forms a tall bar of completely smooth bone underneath the dome, save for six bony nodes that line the bottom edge of the dome and an additional "corner" node just below. These features differentiate
1580: 1804: 2291: 427:, the top surface of the dome is punctuated by many small pits, the eponymous foramina; the dome itself consists of a large, central lobe with a sloped 1293:, to four different genera. This has significant implications for the Late Cretaceous biodiversity of herbivorous dinosaurs. The 2016 description of 610:. Various other fragments of the skull are also known from the Dinosaur Park Formation, representing juvenile, subadult, and adult individuals. 2296: 2191: 1422: 468:(which constitutes the back part of the dome) projects backwards and downwards over the base of the skull. Two traits also differentiate 1700:
Chapman, R.E.; Galton, P.M.; Sepkoski, J.J.; Wall, W.P. (1981). "A morphometric study of the cranium of the pachycephalosaurid dinosaur
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bones became part of the dome much quicker, the dome thickened at a slower rate, and the sides of the dome were less angled than in
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gen. nov. and the diversity of pachycephalosaurid dinosaurs (Ornithischia: Cerapoda) in the Belly River Group of Alberta, Canada".
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The topology of this phylogenetic tree is not very stable, likely due to the incompleteness of most pachycephalosaur specimens.
1735:, a new genus of pachycephalosaurid (Dinosauria: Ornithischia) from the upper Campanian Aguja Formation, southern Texas, USA". 135: 2311: 1591: 1790: 2201: 1472:"Taking a crack at the dome: histopathology of a pachycephalosaurid (Dinosauria: Ornithischia) frontoparietal dome" 622: 2306: 589: 1895: 595: 2174: 602:
in 1902 and reported on during the same year. The layers of rock where the specimen were found belong to the
1453:(Lambe) new comb. (Dinosauria: Ornithischia: Pachycephalosauria) from the Upper Cretaceous of North America" 603: 1590:. New Mexico Museum of Natural History and Science Bulletin. Vol. 35. pp. 347–365. Archived from 512:
skulls showed that the dome became proportionally taller with age, but did not become significantly wider.
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Ontogeny, Diversity, and Systematics of Pachycephalosaur Dinosaurs from the Belly River Group of Alberta
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allows for analysis of the ontogeny, or growth, of the dome. Measurements of 27 different points on 21
419:, as a pachycephalosaurid, was a small, bipedal herbivore with a thickened dome on its skull. In 2016, 2250: 2069: 2017: 1744: 1520: 1509:(Dinosauria: Pachycephalosauria): A Quantitative Model of Pachycephalosaur Dome Growth and Variation" 1346: 484:: there are prominent grooves between the central lobe and the lateral lobes, and the opening of the 2120: 1985: 1964: 1934: 1813: 1713: 1682: 1052: 870: 776: 749: 719: 661: 630: 382: 327: 311: 241: 228: 130: 2268: 1548: 1418: 1283: 679: 607: 423:
estimated its length at 1.5 metres (4.9 ft), its weight at 10 kilograms (22 lb). In
302: 1776:(M.Sc.). Department of Ecology and Evolutionary Biology, University of Toronto. p. 173. 1752: 1651: 1640:"A study of the troodont dinosaurs with the description of a new genus and four new species" 1538: 1528: 1503:
Schott, R.K.; Evans, D.C.; Goodwin, M.B.; Horner, J.R.; Brown, C.M.; Longrich, N.R. (2011).
1483: 1459:. New Mexico Museum of Natural History and Science Bulletin. Vol. 17. pp. 177–190. 1395: 1338: 614: 564: 706:, Latinised Greek for "head", referring to the many pits that covered the top of its dome. 1880: 1864: 420: 389: 30: 1565:
Lambe L. M. (1902). New genera and species from the Belly River series (Mid-Cretaceous).
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Dyer, Aaron D.; LeBlanc, Aaron R.H.; Doschak, Michael R.; Currie, Philip J. (2021).
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Sternberg, C.M. (1945). "Pachycephalosauridae proposed for dome-headed dinosaurs,
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Although it has been reported that many specimens are known from the contemporary
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recognized four distinct species of pachycephalosaur from the Belly River Group:
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represented a truly distinct animal or simply a morph, perhaps the female, of
638: 555: 450: 444: 408: 353: 88: 53: 513: 393: 147: 93: 37: 1581:"A taxonomic review of the Pachycephalosauridae (Dinosauria: Ornithischia)" 1552: 617:, only one (catalogued as TMP 2015.044.0041) can definitely be assigned to 2235: 1846: 1837: 1093: 580: 385: 180: 167: 83: 78: 63: 58: 48: 1386:
Schott, R.K.; Evans, D.C. (2016). "Cranial variation and systematics of
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is slit-like. Micro-CT scans of a potential specimen, identified as cf.
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typifying a new family referred provisionally to the Stegosauria".
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Contributions to Canadian Paleontology, Geological Survey of Canada
492:, support that pachycephalosaurids likely engaged in head-butting. 1417:. Princeton, New Jersey: Princeton University Press. p. 268. 629:, CMN 11316, was re-identified as a small, juvenile indeterminate 537: 407: 378: 2255: 2216: 1824: 1786: 674:
in 2010. In 2011, Ryan Schott suggested a new generic name,
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Proceedings and Transactions of the Royal Society of Canada
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likely represent more than one of the existing species.
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specimens, the parietal is already slightly domed. The
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The Princeton Field Guide to Dinosaurs: Second Edition
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half, and two smaller lateral lobes at the front. The
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Late Cretaceous vertebrates from the Western Interior
594:, a nearly complete frontoparietal dome collected in 1731:
Longrich, N.R.; Sankey, J. & Tanke, D. (2010). "
1317:, although the specimens that have been referred to 646:
in 1918; there was considerable debate over whether
2225: 2068: 2016: 1984: 1933: 1906: 1879: 1644:Bulletin of the American Museum of Natural History 532:, the dome is flat; however, in even the smallest 636:CMN 1423 was first assigned to a new species of 1438: 1436: 1434: 690:until Schott and David Evans formally renamed 1798: 1381: 504:, the wide age range present in specimens of 8: 1379: 1377: 1375: 1373: 1371: 1369: 1367: 1365: 1363: 1361: 714:A phylogenetic analysis in 2016 found that 2213: 2022: 1990: 1981: 1912: 1885: 1876: 1821: 1805: 1791: 1783: 1615:Lambe, L.M. (1918). "The Cretaceous genus 116: 20: 1586:. In Lucas, S.G.; Sullivan, R.M. (eds.). 1542: 1532: 1487: 1392:Zoological Journal of the Linnean Society 698:in 2016. The generic name combines Latin 1455:. In Lucas, S.G.; Heckert, A.B. (eds.). 1449:(Brown & Schlaikjer) new comb. and 1357: 682:thesis, resulting in a new combination 664:in 2000, and then it was assigned to 520:The growth series of the dome allows 7: 1638:Brown, B.; Schlaikjer, E.M. (1943). 439:from all other pachycephalosaurids. 1144: 1085: 1044: 1037: 996: 972: 948: 924: 900: 876: 789: 782: 755: 745: 2292:Pachycephalosaurs of North America 524:to be differentiated further from 14: 2197: 2196: 2173: 1331: 134: 1053:Pachycephalosaurus wyomingensis 1: 2297:Fossil taxa described in 2016 1757:10.1016/j.cretres.2009.12.002 544:are slit-like, as opposed to 1534:10.1371/journal.pone.0021092 654:. Later, it was assigned to 621:. Another specimen from the 540:on the top of the skulls of 412:Life restoration of an adult 1489:10.37819/biosis.002.02.0101 909:Homalocephale calathocercos 125:Holotype specimen CMN 1423 2328: 1476:Biosis: Biological Systems 1447:Prenocephale edmontonensis 670:by Longrich, Sankey & 623:Horseshoe Canyon Formation 16:Extinct genus of dinosaurs 2186: 2171: 2025: 1993: 1980: 1961: 1915: 1888: 1875: 1820: 1413:Paul, Gregory S. (2016). 1170:Sphaerotholus buchholtzae 1166: 1149: 1142: 1107: 1090: 1083: 1066: 1049: 1042: 1035: 1018: 1001: 994: 977: 970: 953: 946: 929: 922: 905: 898: 881: 874: 845: 828: 811: 794: 787: 780: 764:Wannanosaurus yanshiensis 760: 753: 686:. It remained an invalid 317: 310: 288: 281: 131:Scientific classification 129: 124: 115: 23: 849:Stegoceras novomexicanum 596:Dinosaur Provincial Park 261:Schott & Evans, 2016 2302:Paleontology in Alberta 1706:Journal of Paleontology 1675:Journal of Paleontology 1579:Sullivan, R.M. (2006). 1457:Dinosaurs of New Mexico 1443:Sullivan, R.M. (2000). 604:Dinosaur Park Formation 538:supratemporal fenestrae 344:Longrich, Sankey & 1673:, n. sp., described". 1388:Foraminacephale brevis 1153:Sphaerotholus goodwini 1070:Alaskacephale gonglofi 957:Foraminacephale brevis 885:Goyocephale lattimorei 696:Foraminacephale brevis 688:nomen ex dissertatione 684:Foraminacephale brevis 553:, and more similar to 490:Foraminacephale brevis 413: 295:Foraminacephale brevis 2264:Paleobiology Database 1770:Schott, R.K. (2011). 1733:Texacephale langstoni 1505:"Cranial Ontogeny in 981:Amtocephale gobienses 815:Colepiocephale lambei 798:Hanssuesia sternbergi 625:formerly assigned to 411: 2312:Ornithischian genera 2070:Pachycephalosaurinae 2018:Pachycephalosauridae 1347:2016 in paleontology 1111:Stygimoloch spinifer 933:Tylocephale gilmorei 871:Pachycephalosaurinae 777:Pachycephalosauridae 720:Pachycephalosaurinae 718:was a member of the 575:Discovery and naming 563:, the squamosal and 242:Pachycephalosauridae 1749:2010CrRes..31..274L 1737:Cretaceous Research 1525:2011PLoSO...621092S 1094:Dracorex hogwartsia 1005:Prenocephale prenes 631:pachycephalosaurine 396:stage) deposits of 2121:Pachycephalosaurus 1986:Pachycephalosauria 1965:Pachycephalosauria 1935:Pachycephalosauria 1814:Pachycephalosauria 1507:Stegoceras validum 1290:Stegoceras validum 832:Stegoceras validum 750:Pachycephalosauria 702:("foramina") with 662:Robert M. Sullivan 559:. Furthermore, in 414: 383:pachycephalosaurid 229:Pachycephalosauria 2279: 2278: 2219:Taxon identifiers 2210: 2209: 2182: 2181: 2169: 2168: 2165: 2164: 1976: 1975: 1972: 1971: 1957: 1956: 1953: 1952: 1671:Stegoceras lambei 1424:978-0-691-16766-4 1400:10.1111/zoj.12465 1284:Belly River Group 1271: 1270: 1262: 1261: 1253: 1252: 1244: 1243: 1235: 1234: 1226: 1225: 1217: 1216: 1208: 1207: 1199: 1198: 1190: 1189: 1181: 1180: 1131: 1130: 1122: 1121: 1022:Acrotholus audeti 860: 859: 680:Master of Science 608:Belly River Group 366: 365: 360: 349: 331: 262: 2319: 2307:Campanian genera 2272: 2271: 2259: 2258: 2246: 2245: 2244: 2214: 2200: 2199: 2177: 2023: 1991: 1982: 1913: 1886: 1877: 1870: 1869: 1822: 1807: 1800: 1793: 1784: 1778: 1777: 1767: 1761: 1760: 1728: 1722: 1721: 1697: 1691: 1690: 1666: 1660: 1659: 1635: 1629: 1628: 1612: 1606: 1605: 1603: 1602: 1596: 1585: 1576: 1570: 1563: 1557: 1556: 1546: 1536: 1500: 1494: 1493: 1491: 1467: 1461: 1460: 1440: 1429: 1428: 1410: 1404: 1403: 1383: 1341: 1339:Dinosaurs portal 1336: 1335: 1334: 1145: 1086: 1045: 1038: 997: 973: 949: 925: 901: 877: 790: 783: 756: 746: 732:, but in a more 615:Oldman Formation 358: 343: 326: 297: 293: 260: 253: 240: 227: 211: 195: 139: 138: 120: 110: 40: 29:Temporal range: 21: 2327: 2326: 2322: 2321: 2320: 2318: 2317: 2316: 2282: 2281: 2280: 2275: 2267: 2262: 2254: 2249: 2240: 2239: 2234: 2227:Foraminacephale 2221: 2211: 2206: 2178: 2161: 2100:Foraminacephale 2064: 2012: 1968: 1949: 1929: 1902: 1896:Avemetatarsalia 1881:Avemetatarsalia 1871: 1865:Marginocephalia 1827: 1826: 1816: 1811: 1781: 1769: 1768: 1764: 1730: 1729: 1725: 1699: 1698: 1694: 1668: 1667: 1663: 1637: 1636: 1632: 1614: 1613: 1609: 1600: 1598: 1594: 1583: 1578: 1577: 1573: 1564: 1560: 1502: 1501: 1497: 1469: 1468: 1464: 1442: 1441: 1432: 1425: 1412: 1411: 1407: 1385: 1384: 1359: 1355: 1337: 1332: 1330: 1327: 1303:Foraminacephale 1295:Foraminacephale 1280: 1272: 1263: 1254: 1245: 1236: 1227: 1218: 1209: 1200: 1191: 1182: 1132: 1123: 861: 716:Foraminacephale 712: 676:Foraminacephale 627:Foraminacephale 619:Foraminacephale 585:Foraminacephale 577: 561:Foraminacephale 542:Foraminacephale 534:Foraminacephale 522:Foraminacephale 510:Foraminacephale 506:Foraminacephale 498: 470:Foraminacephale 466:Foraminacephale 437:Foraminacephale 425:Foraminacephale 421:Gregory S. Paul 417:Foraminacephale 406: 390:Late Cretaceous 370:Foraminacephale 306: 299: 291: 290: 277: 259: 256:Foraminacephale 251: 238: 225: 209: 193: 133: 111: 109: 108: 107: 106: 101: 96: 91: 86: 81: 76: 71: 66: 61: 56: 51: 46: 35: 34: 31:Late Cretaceous 27: 25:Foraminacephale 17: 12: 11: 5: 2325: 2323: 2315: 2314: 2309: 2304: 2299: 2294: 2284: 2283: 2277: 2276: 2274: 2273: 2260: 2247: 2231: 2229: 2223: 2222: 2217: 2208: 2207: 2205: 2204: 2194: 2187: 2184: 2183: 2180: 2179: 2172: 2170: 2167: 2166: 2163: 2162: 2160: 2159: 2152: 2145: 2138: 2131: 2124: 2117: 2110: 2103: 2096: 2089: 2082: 2074: 2072: 2066: 2065: 2063: 2062: 2055: 2048: 2041: 2034: 2031:Colepiocephale 2026: 2020: 2014: 2013: 2011: 2010: 2003: 1999:Ferganocephale 1994: 1988: 1978: 1977: 1974: 1973: 1970: 1969: 1962: 1959: 1958: 1955: 1954: 1951: 1950: 1948: 1947: 1946: 1945: 1939: 1937: 1931: 1930: 1928: 1927: 1926: 1925: 1916: 1910: 1904: 1903: 1901: 1900: 1899: 1898: 1889: 1883: 1873: 1872: 1868: 1867: 1858: 1849: 1840: 1834: 1825: 1818: 1817: 1812: 1810: 1809: 1802: 1795: 1787: 1780: 1779: 1762: 1743:(2): 274–284. 1723: 1712:(3): 608–618. 1692: 1681:(5): 534–538. 1661: 1630: 1607: 1571: 1558: 1495: 1482:(2): 248–270. 1462: 1430: 1423: 1405: 1356: 1354: 1351: 1350: 1349: 1343: 1342: 1326: 1323: 1314:Colepiocephale 1279: 1276: 1269: 1268: 1265: 1264: 1260: 1259: 1256: 1255: 1251: 1250: 1247: 1246: 1242: 1241: 1238: 1237: 1233: 1232: 1229: 1228: 1224: 1223: 1220: 1219: 1215: 1214: 1211: 1210: 1206: 1205: 1202: 1201: 1197: 1196: 1193: 1192: 1188: 1187: 1184: 1183: 1179: 1178: 1175: 1174: 1165: 1162: 1161: 1158: 1157: 1148: 1143: 1141: 1138: 1137: 1134: 1133: 1129: 1128: 1125: 1124: 1120: 1119: 1116: 1115: 1106: 1103: 1102: 1099: 1098: 1089: 1084: 1082: 1079: 1078: 1075: 1074: 1065: 1062: 1061: 1058: 1057: 1048: 1043: 1041: 1036: 1034: 1031: 1030: 1027: 1026: 1017: 1014: 1013: 1010: 1009: 1000: 995: 993: 990: 989: 986: 985: 976: 971: 969: 966: 965: 962: 961: 952: 947: 945: 942: 941: 938: 937: 928: 923: 921: 918: 917: 914: 913: 904: 899: 897: 894: 893: 890: 889: 880: 875: 873: 867: 866: 863: 862: 858: 857: 854: 853: 844: 841: 840: 837: 836: 827: 824: 823: 820: 819: 810: 807: 806: 803: 802: 793: 788: 786: 781: 779: 773: 772: 769: 768: 759: 754: 752: 744: 736:position than 726:position than 711: 710:Classification 708: 644:Lawrence Lambe 576: 573: 497: 494: 457:Colepiocephale 433:squamosal bone 405: 402: 364: 363: 362: 361: 350: 332: 315: 314: 308: 307: 300: 286: 285: 279: 278: 274:F. brevis 270: 268: 264: 263: 249: 245: 244: 236: 232: 231: 223: 216: 215: 213:Neornithischia 207: 200: 199: 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: 41: 28: 15: 13: 10: 9: 6: 4: 3: 2: 2324: 2313: 2310: 2308: 2305: 2303: 2300: 2298: 2295: 2293: 2290: 2289: 2287: 2270: 2265: 2261: 2257: 2252: 2248: 2243: 2237: 2233: 2232: 2230: 2228: 2224: 2220: 2215: 2203: 2195: 2193: 2189: 2188: 2185: 2176: 2158: 2157: 2153: 2151: 2150: 2149:Sphaerotholus 2146: 2144: 2143: 2139: 2137: 2136: 2132: 2130: 2129: 2125: 2123: 2122: 2118: 2116: 2115: 2114:Homalocephale 2111: 2109: 2108: 2104: 2102: 2101: 2097: 2095: 2094: 2090: 2088: 2087: 2086:Alaskacephale 2083: 2081: 2080: 2076: 2075: 2073: 2071: 2067: 2061: 2060: 2056: 2054: 2053: 2049: 2047: 2046: 2042: 2040: 2039: 2035: 2033: 2032: 2028: 2027: 2024: 2021: 2019: 2015: 2009: 2008: 2007:Wannanosaurus 2004: 2001: 2000: 1996: 1995: 1992: 1989: 1987: 1983: 1979: 1967: 1966: 1960: 1943: 1942: 1941: 1940: 1938: 1936: 1932: 1924: 1920: 1919: 1918: 1917: 1914: 1911: 1909: 1905: 1897: 1893: 1892: 1891: 1890: 1887: 1884: 1882: 1878: 1874: 1866: 1862: 1859: 1857: 1853: 1850: 1848: 1844: 1841: 1839: 1835: 1833: 1829: 1828: 1823: 1819: 1815: 1808: 1803: 1801: 1796: 1794: 1789: 1788: 1785: 1775: 1774: 1766: 1763: 1758: 1754: 1750: 1746: 1742: 1738: 1734: 1727: 1724: 1719: 1715: 1711: 1707: 1703: 1696: 1693: 1688: 1684: 1680: 1676: 1672: 1665: 1662: 1657: 1653: 1649: 1645: 1641: 1634: 1631: 1626: 1622: 1618: 1611: 1608: 1597:on 2007-09-27 1593: 1589: 1582: 1575: 1572: 1568: 1562: 1559: 1554: 1550: 1545: 1540: 1535: 1530: 1526: 1522: 1519:(6): e21092. 1518: 1514: 1510: 1508: 1499: 1496: 1490: 1485: 1481: 1477: 1473: 1466: 1463: 1458: 1454: 1452: 1448: 1439: 1437: 1435: 1431: 1426: 1420: 1416: 1409: 1406: 1401: 1397: 1393: 1389: 1382: 1380: 1378: 1376: 1374: 1372: 1370: 1368: 1366: 1364: 1362: 1358: 1352: 1348: 1345: 1344: 1340: 1329: 1324: 1322: 1320: 1316: 1315: 1310: 1309: 1304: 1300: 1296: 1292: 1291: 1285: 1277: 1275: 1267: 1266: 1258: 1257: 1249: 1248: 1240: 1239: 1231: 1230: 1222: 1221: 1213: 1212: 1204: 1203: 1195: 1194: 1186: 1185: 1177: 1176: 1173: 1172: 1171: 1164: 1163: 1160: 1159: 1156: 1155: 1154: 1147: 1146: 1140: 1139: 1136: 1135: 1127: 1126: 1118: 1117: 1114: 1113: 1112: 1105: 1104: 1101: 1100: 1097: 1096: 1095: 1088: 1087: 1081: 1080: 1077: 1076: 1073: 1072: 1071: 1064: 1063: 1060: 1059: 1056: 1055: 1054: 1047: 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467: 463: 462:parietal bone 459: 458: 453: 452: 447: 446: 440: 438: 434: 430: 426: 422: 418: 410: 403: 401: 399: 395: 391: 387: 384: 380: 376: 372: 371: 357: 355: 351: 347: 342: 338: 337: 336:Sphaerotholus 333: 329: 325: 323: 319: 318: 316: 313: 309: 304: 298: 296: 287: 284: 283:Binomial name 280: 276: 275: 269: 266: 265: 258: 257: 250: 247: 246: 243: 237: 234: 233: 230: 224: 221: 218: 217: 214: 208: 205: 202: 201: 198: 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: 26: 22: 19: 2226: 2154: 2147: 2140: 2135:Prenocephale 2133: 2126: 2119: 2112: 2105: 2099: 2098: 2091: 2084: 2077: 2057: 2050: 2043: 2036: 2029: 2005: 1997: 1963: 1923:Ornithischia 1908:Ornithischia 1860: 1856:Ornithischia 1851: 1842: 1772: 1765: 1740: 1736: 1732: 1726: 1709: 1705: 1701: 1695: 1678: 1674: 1670: 1664: 1647: 1643: 1633: 1624: 1623:. Series 3. 1620: 1616: 1610: 1599:. Retrieved 1592:the original 1587: 1574: 1566: 1561: 1516: 1512: 1506: 1498: 1479: 1475: 1465: 1456: 1450: 1446: 1414: 1408: 1391: 1387: 1318: 1312: 1306: 1302: 1298: 1294: 1288: 1281: 1278:Paleoecology 1273: 1168: 1167: 1151: 1150: 1109: 1108: 1092: 1091: 1068: 1067: 1051: 1050: 1020: 1019: 1003: 1002: 979: 978: 956: 955: 954: 931: 930: 907: 906: 883: 882: 847: 846: 830: 829: 813: 812: 796: 795: 762: 761: 739:Prenocephale 737: 727: 722:, in a more 715: 713: 703: 699: 695: 691: 687: 683: 675: 665: 657:Prenocephale 655: 651: 647: 637: 635: 626: 618: 612: 588: 584: 578: 568: 560: 554: 550: 545: 541: 533: 529: 525: 521: 519: 509: 505: 501: 499: 489: 481:Prenocephale 479: 473: 469: 465: 455: 449: 443: 441: 436: 424: 416: 415: 377:head") is a 369: 368: 367: 352: 340: 334: 322:Prenocephale 320: 294: 289: 273: 272: 255: 254: 219: 203: 197:Ornithischia 187: 174: 24: 18: 2156:Tylocephale 2142:Sinocephale 2128:Platytholus 2107:Goyocephale 2093:Amtocephale 2059:Texacephale 2038:Gravitholus 1650:: 121–149. 692:"S." brevis 648:"S." brevis 565:postorbital 528:. In young 404:Description 359:Lambe, 1918 36:77–73  2286:Categories 2190:See also: 2079:Acrotholus 2052:Stegoceras 2045:Hanssuesia 1944:see below↓ 1847:Dinosauria 1702:Stegoceras 1617:Stegoceras 1601:2016-11-26 1353:References 1319:Hanssuesia 1308:Hanssuesia 1299:Stegoceras 729:Stegoceras 652:S. validum 639:Stegoceras 569:Stegoceras 556:Acrotholus 551:Stegoceras 546:Stegoceras 530:Stegoceras 526:Stegoceras 502:Stegoceras 451:Hanssuesia 445:Stegoceras 373:(meaning " 354:Stegoceras 181:Dinosauria 1830:Kingdom: 1569:3: 25–81. 1451:P. brevis 678:, in his 514:Histology 394:Campanian 267:Species: 154:Kingdom: 148:Eukaryota 2256:60970977 2242:Q5863739 2236:Wikidata 2202:Category 2192:Timeline 1838:Chordata 1836:Phylum: 1832:Animalia 1656:2246/387 1627:: 23–36. 1553:21738608 1513:PLOS ONE 1325:See also 700:foramina 581:holotype 500:As with 496:Ontogeny 386:dinosaur 375:foramina 328:Sullivan 312:Synonyms 235:Family: 168:Chordata 164:Phylum: 158:Animalia 144:Domain: 1745:Bibcode 1718:1304275 1687:1299007 1544:3126802 1521:Bibcode 724:derived 704:cephale 606:of the 600:Alberta 442:Unlike 429:frontal 305:, 1918) 292:† 271:† 248:Genus: 105:↓ 2269:448078 1716:  1685:  1551:  1541:  1421:  1311:, and 460:, the 454:, and 398:Canada 356:brevis 348:, 2010 341:brevis 330:, 2000 324:brevis 1861:Clade 1852:Clade 1843:Clade 1714:JSTOR 1683:JSTOR 1595:(PDF) 1584:(PDF) 734:basal 672:Tanke 472:from 388:from 379:genus 346:Tanke 303:Lambe 220:Clade 204:Clade 188:Clade 175:Clade 1921:see 1894:see 1549:PMID 1419:ISBN 1282:The 592:1423 579:The 478:and 44:Preκž’ 2251:EoL 1753:doi 1704:". 1652:hdl 1539:PMC 1529:doi 1484:doi 1396:doi 694:to 660:by 642:by 590:CMN 587:is 583:of 464:of 381:of 2288:: 2266:: 2253:: 2238:: 1863:: 1854:: 1845:: 1751:. 1741:31 1739:. 1710:55 1708:. 1679:19 1677:. 1648:82 1646:. 1642:. 1625:12 1547:. 1537:. 1527:. 1515:. 1511:. 1478:. 1474:. 1433:^ 1394:. 1360:^ 1305:, 1301:, 633:. 598:, 571:. 448:, 400:. 339:? 222:: 206:: 190:: 177:: 94:Pg 38:Ma 33:, 2002:? 1806:e 1799:t 1792:v 1759:. 1755:: 1747:: 1720:. 1689:. 1658:. 1654:: 1604:. 1555:. 1531:: 1523:: 1517:6 1492:. 1486:: 1480:2 1445:" 1427:. 1402:. 1398:: 392:( 301:( 252:† 239:† 226:† 210:† 194:† 99:N 89:K 84:J 79:T 74:P 69:C 64:D 59:S 54:O 49:κž’

Index

Late Cretaceous
Ma
Preκž’
κž’
O
S
D
C
P
T
J
K
Pg
N

Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Dinosauria
Ornithischia
Neornithischia
Pachycephalosauria
Pachycephalosauridae
Foraminacephale
Binomial name
Lambe
Synonyms
Prenocephale

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