Marginocephalia
Ornithischia | Genasauria | Cerapoda | Marginocephalia [Herbivore]
Named by Sereno, 1986 te represent Pachycephalosauria and Ceratopia. Based on four synapomorphies, including the narrow parietal shelf, the posterior squamosal shelf, the short posterior premaxillary palate and short postpubic process and loss of the pubic symphysis.
Jurassic Middle
China
Chaoyangsaurus youngi - Tuchengzi Formation, Chaoyang County, Liaoning Province
Kirgizia
Ferganocephale adenticulatum - Balabansai Formation, (Balabansai Svita)
Jurassic Late
China
Chaoyangsaurus youngi - Tuchengzi Formation, Chaoyang County - Liaoning Province
Xuanhuaceratops niei - Houcheng Formation, - Hebei Province
Yinlong downsi - Shishugou Formation of Xinjiang
Cretaceous Early
England
Yaverlandia bitholus - Wealden Beds (Wealden Maris)- Wessex Formation - Isle of Wight
Germany
Stenopelix valdensis - Wealden Beds, Obernkirchen Sandstein - Niedersachsen
China
Archaeoceratops oshimai - Xinminbao Group
Archaeoceratops yujingziensis - Xinminpu Group
Auroraceratops rugosus - Xinminpu Group, Gongpoquan Basin - Gansu Province
Helioceratops brachygnathus - Quantou Formation - Jilin Province
Hongshanosaurus houi - Yixian Formation in Beipiao City - Liaoning Province
Liaoceratops yanzigouensis - Yixian Formation -Shangyuan - Liaoning
Psittacosaurus
Psittacosaurus gobiensis - Bayin Gobi Formation, Nei Mongol
Psittacosaurus guyangensis - Lisangou Formation, -Nei Mongol Zizhiqu
Psittacosaurus lujiatunensis - Yixian Formation - Liaoning Province
Psittacosaurus major - Yixian Formation, Liaoning Province
Psittacosaurus mazongshanensis - Mazongshan Area, Gansu Province
Psittacosaurus meileyingensis - Jiufotang Formation - Liaoning Province
Psittacosaurus mongoliensis - Unnamed unit, Nei Mongol Zizhiqu
Psittacosaurus neimongoliensis - Ejinhoro Formation, Ordo region, Inner Mongolia
Psittacosaurus ordosensis - Ejinhoro Formation, Ordo region, Inner Mongolia
Psittacosaurus osborni - Lisangou Formation, Xinpongnaobao Formation, Nei Mongol Zizhiqu
Psittacosaurus sinensis - Qingshan Formation, Shandong
Psittacosaurus tingi - West Suiyan, Inner Mongolia
Psittacosaurus xinjiangensis - Tugulu Group of the Junggar Basin, Lianmugin Formation, Xinjiang Uygur Zizhiqu
Psittacosaurus youngi - Qingshan Formation, Shandong
Mongolia
Psittacosaurus
Protiguanodon mongoliensis - Khukhtekskaya Svita
Psittacosaurus mongoliensis - Khukhtekskaya Svita, Dornogov, Khulsyngolskaya Svita, Dundgov, Shinekhudukskaya Svita, Unnamed unit, Bayankhongor, Khukhtekskaya Svita, Ovorknahgai
Psittacosaurus protiguanodonensis - Khukhtekskaya Svita, Ovorknahgai
Yamaceratops dorngobiensis - Khugenetslavkant sandstone, Gobi Desert
Russia
Psittacosaurus
Psittacosaurus sibiricus - Ilek Formation at Shestakovo, Kemerovo, Province, West Siberia
South Korea
Koreaceratops hwaseongensis - Tando beds
Thailand
Psittacosaurus
Psittacosaurus sattayaraki - Khok Kruat Formation
Uzbekistan
Kulceratops kulensis - Karakalpakistan - Khodzhakul\\\\\\\' Formation
Australia
Serendipaceratops arthurcclarkei - Wonthaggi Formation, Inverloch - Victoria
Leptoceratops sp. (1) -
Cretaceous Late
Hungary
Ajkaceratops kozmai - Czehbánya Formation
Canada
Albertaceratops nesmoi - Oldman Formation, Alberta
Anchiceratops
Anchiceratops longirostris - Horseshoe Canyon Formation - Alberta
Anchiceratops ornatus - Judith River Group (Wedge) - Horseshoe Canyon Formation - Alberta
Arrhinoceratops brachyops - Edmonton Group, Horseshoe Canyon Formation - Alberta
Centrosaurus
Centrosaurus apertus - Judith River Group (Wedge), Alberta
Centrosaurus longirostris - Judith River Group (Wedge), Alberta
Monoclonius cutleri - Judith River Group (Wedge), Alberta
Monoclonius dawsoni - Judith River Group (Wedge), Alberta
Monoclonius flexus - Judith River Group (Wedge), Alberta
Chasmosaurus
Chasmosaurus belli - Judith River Group (Wedge), Alberta
Chasmosaurus brevirostris - Judith River Wedge, Oldman Formation - Alberta
Chasmosaurus canadensis - Judith River Wedge - Alberta
Chasmosaurus kaiseni - Judith River Wedge - Alberta
Chasmosaurus russelli - Judith River Wedge - Alberta
Coronosaurus brinkmani - Oldman Formation, Judith River Group (Wedge), Alberta
Centrosaurus brinkmani - Oldman Formation, Judith River Group (Wedge), Alberta
Eoceratops canadensis
Monoclonius belli - Judith River Group (Wedge) - Alberta
Monoclonius canadensis - Judith River Group (Wedge) - Alberta
Protorosaurus belli - Judith River Group (Wedge), Alberta
Colepiocephale lambei - [Foremost Formation], Judith River Wedge - Alberta
Stegoceras lambei - [Foremost Formation], Judith River Wedge - Alberta
Eotriceratops xerinsularis - Horseshoe Canyon Formation - Alberta
Gravitholus albertae - Judith River Group (Wedge) - Alberta
Gryphognathus morrisoni - Milk River Formation, Alberta
Leptoceratops gracilis - Scollard Formation - Alberta
Mojoceratops perifania - Judith River Wedge, Alberta, Saskatchewan
Monoclonius
Monoclonius crassus - Judith River Group (Wedge) - Alberta
Monoclonius lowei - Judith River Group (Wedge) - Alberta
Pachyrhinosaurus canadensis - Horseshoe Canyon Formation, St. Mary River Formation, Waptiti Formation, Alberta
Pachyrhinosaurus lakustai - Pipestone Creek bonebed, Alberta
Spinops sternbergorum - Judith River Group (Wedge), Alberta
Stegoceras
Ornatotholus
Ornatotholus browni - Judith River Group (Wedge), Alberta
Stegoceras breve - Judith River Wedge - Alberta
Stegoceras browni - Judith River Group (Wedge), Alberta
Stegoceras edmontonense - Horseshoe Canyon Formation, Alberta
Stegoceras novomexicanum - Fruitland Formation, Kirtland Formation
Stegoceras validum - Judith River Group (Wedge), Alberta
Troodon edmontonensis - Horseshoe Canyon Formation, Alberta
Styracosaurus
Monoclonius nasicornus - Judith River Group (Wedge), Alberta
Styracosaurus albertensis - Judith River Group (Wedge), Alberta
Styracosaurus parksi - Judith River Group (Wedge), Alberta
Torosaurus latus - Frenchman Formation, Saskatchewan
Triceratops
Triceratops albertensis - Scollard Formation, Alberta
Triceratops horridus - Scollard Formation, Alberta, Frenchman Formation, Saskatchewan
Triceratops prorsus - Frenchman Formation, Saskatchewan
Unescoceratops koppelhusae - Dinosaur Park Formation - Alberta
Vagaceratops irvinensis - Dinosaur Park Formation - Alberta
Chasmosaurus irvinensis - Dinosaur Park Formation - Alberta
Xenoceratops foremostensis - Foremost Formation, Alberta Canada
Mexico
Chasmosaurus
Chasmosaurus mariscalensis - Aguja Formation, Texas
Coahuilaceratops magnacuerna - Cerro del Pueblo Formation
US
Achelousaurus horneri - Two Medicine Formation, Montana
Agathaumas sylvestris - Lance Formation, Wyoming
Agujaceratops mariscalensis - Aguja Formation, Texas
Alaskacephale gangloffi - Prince Creek Formation, Alaska
Avaceratops lammersi - Judith River Formation (Wedge), Montana
Bison alticornis - Lance Formation, Wyoming
Cerasinops hodgskissi - Lower Two Medicine Formation, Montana
Ceratops montanus - Judith River Formation, Montana
Chasmosaurus
Chasmosaurus mariscalensis - Aguja Formation, Texas
Diabloceratops eatoni - Wahweap Formation, Utah
Dracorex hogwartsia - Hell Creek Formation, South Dakota
Dysganus bicarinatus - Judith River Formation (Wedge), Montana
Dysganus encaustus (2) - Judith River Formation (Wedge), Montana
Dysganus haydenianus - Judith River Formation (Wedge), Montana
Dysganus peiganus - Judith River Formation (Wedge), Montana
Einiosaurus procurvicornis - Two Medicine Formation, Montana
Hanssuesia sternbergi
Stegoceras sternbergi
Troodon sternbergi
Kosmoceratops richardsoni - Kaiparowits Formation, southern Utah
Leptoceratops gracilis - Scollard Formation, Alberta, Canada; Lance Formation, Wyoming, Hell Creek Formation, Montana
Leptoceratops sp. (2) - Pinyon Conglomerate, Wyoming
Medusaceratops lokii - Judith River Formation - Montana
Monoclonius
Monoclonius crassus - Judith River Formation (Wedge), Montana
Monoclonius fissus
Monoclonius recurvicornis
Monoclonius sphenocerus - Judith River Formation (Wedge), Montana
Montanoceratops
Leptoceratops cerorhynchus - St. Mary River Formation, Montana
Montanoceratops cerorhynchus - St. Mary River Formation, Montana
Ojoceratops fowleri - Ojo Alamo Sandstone, New Mexico
Pachyrhinosaurus canadensis
Pachyrhinosaurus perotorum - Prince Creek Formation, Alaska
Nedoceratops hatcheri - Lance Formation, Wyoming
Diceratus hatcheri - Lance Formation, Wyoming
Diceratops hatcheri - Lance Formation, Wyoming
Pachycephalosaurus
Pachycephalosaurus grangeri
Pachycephalosaurus reinheimeri - Judith River Formation, (Wedge) Montana
Pachycephalosaurus wyomingensis - Lance Formation, Wyoming; Hell Creek Formation, South Dakota; Judith River Formation (Wedge), Hell Creek Formation, Montana
Troodon wyomingensis - Lance Formation, Wyoming
Tylosteus ornatus - [Nomen Oblitum]
Pentaceratops sternbergii - Fruitland Formation, Kirtland Formation, New Mexico
Pentaceratops fenestratus - Fruitland Formation, Kirtland Formation, New Mexico
Polyonax mortuarius - ?Denver Formation, Colorado
Prenoceratops pieganensis - Two Medicine Formation, Montana
Sphaerotholus buchholtzae - Hell Creek Formation, Montana
Sphaerotholus goodwini - Kirtland Formation - New Mexico
Stegoceras
Stegoceras edmontonense - Hell Creek Formation, Montana
Stegoceras novomexicanum - Fruitland Formation Kirtland Formation
Stegoceras validum - Judith River Formation (Wedge), Montana, Fruitland Formation, San Juan Basin, New Mexico
Stygimoloch spinifer - Hell Creek Formation, Montana, North Dakota, Lance Formation, Wyoming,
Stenotholus kohleri - Hell Creek Formation, Montana
Rubeosaurus ovatus - Two Medicine Formation - Montana
Styracosaurus ovatus - Two Medicine Formation, Montana
Brachyceratops montanensis - Two Medicine Formation, Montana
Tatankaceratops sacrisonorum - Hell Creek Formation, South Dakota
Texacephale langstoni - Aguja Formation, Texas
Titanoceratops ouranos - Fruitland Formation or the lower Kirtland Formation, New Mexico
Torosaurus latus - Lance Formation, Wyoming; Hell Creek Formationn, Montana, South Dakota; Laramie Formation, Colorado; North Horn Formation, Utah; Kirtland Formation, New Mexico; Javelina Formation, Texas
Torosaurus gladius - Lance Formation, Wyoming
Torosaurus utahensis - North Horn Formation, Utah, Kirtland Formation, New Mexico, Javelina Formation, Texas
Arrhinoceratops utahensis - North Horn Formation, Utah, Kirtland Formation, New Mexico; Javelina Formation, Texas
Triceratops
Sterrholophus flabellatus - Lance Formation, Evanston Formation, Wyoming
Triceratops alticornis - Denver Formation
Triceratops brevicornus - Lance Formation, Wyoming
Triceratops calicornis - Lance Formation, Wyoming
Triceratops elatus - Lance Formation, Wyoming
Triceratops eurycephalus - Lance Formation, Wyoming
Triceratops flabellatus - Lance Formation, Evanston Formation, Wyoming
Triceratops hatcheri - Lance Formation, Wyoming
Triceratops horridus - Lance Formation, Evanston Formation, Wyoming, Hell Creek Formation, Montana, South Dakota, Laramie Formation, Colorado
Triceratops obtusus - Lance Formation, Wyoming
Triceratops prorsus - Hell Creek Formation, Montana, Lance Formation, Wyoming
Triceratops serratus - Hell Creek Formation, Montana, Lance Formation, Wyoming
Triceratops galeus - Denver Formation, Colorado
Triceratops ingens - Lance Formation, Wyoming
Triceratops maximus - Hell Creek Formation, Montana
Triceratops sulcatus - Lance Formation, Wyoming
Ugrosaurus olsoni - Hell Creek Formation, Montana
Utahceratops gettyi - Kaiparowits Formation, southern Utah
Zuniceratops christopheri - Moreno Hill Formation, New Mexico
Argentina
Notoceratops bonarelli - Chubut Province
China
Heishansaurus pachycephalus - Minhe Formation
Helioceratops brachygnathus - Quantou Formation - Jilin Province
Magnirostris dodsoni - Bayan Mandahu area in Inner Mongolia
Microceratus sulcidens - Minhe Formation
Microceratops sulcidens - Minhe Formation
Microceratops gobiensis - Minhe Formation
Micropachycephalosaurus hongtuyanensis - Wangshi Series
Protoceratops andrewsi - Minhe Formation
Protoceratops hellenikorhinus - Bayan Madahu Formation
Psittacosaurus
Psittacosaurus major - Yixian Formation, Liaoning Province
Sinoceratops zhuchengensis - Wangshi Series
Troodon bexelli - Minhe Formation
Wannanosaurus yansiensis - Xiaoyan Formation
Zhuchengceratops inexpectus - Wangshi Series
Mongolia
Amtocephale gobiensis - Baynshirenskaya Svita
Bagaceratops rozhdestvenskyi - Barun Goyot Formation, Red Beds of Khermeen Tsav
Bainoceratops efremovi - Djadochta Formation, Bayn Dzak
Breviceratops
Breviceratops kozlowskii - Barun Goyot Formation
Protoceratops kozlowskii ? - Barun Goyot Formation
Gobiceratops minutus - Barun Goyot Formation
Goyocephale lattimorei - Unnamed unit, Ovorkhangai
Graciliceratops mongoliensis - Baynshirenskaya Svita
Microceratops gobiensis - Minhe Formation
Homalocephale calathoceros - Nemegt Formation
Lamaceratops tereschenkoi - Barun Goyot Formation
Prenocephale prenes - Nemegt Formation
Psittacosaurus
Protiguanodon mongoliensis - Khukhtekskaya Svita
Protoceratops andrewsi - Djadochta Formation, Beds of Toogreeg, ?Beds of Aleg Teg
Protoceratops kozlowskii ? - Barun Goyot Formation
Tylocephale gilmorei - Barun Goyot Formation
Udanoceratops tschizhovi - Udan-Sayr fossil locality
Uzbekistan
Asiaceratops salsopaludalis - Khodzhakul\\\\\\\' Formation
Turanoceratops tardabilis - Central Kyzylkum desert at Dzharakuduk
Australia
Serendipaceratops arthurcclarkei - Wonthaggi Formation, Victoria
Leptoceratops sp. (1)
Nomen Nudem: Microcephale; Xuanhuasaurus niei; Ceratops horridus
Eucentrosaurus Unnecessary replacement name for supposedly preoccupied Centrosaurus Lambe.