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Marginocephalia

Reptilia -

Synonymy list
YearName and author
1986Marginocephalia Sereno
1990Marginocephalia Benton p. 19
1997Marginocephalia Dodson p. 474
1997Marginocephalia Sereno p. 443
1998Marginocephalia Sereno p. 62
1999Marginocephalia Sereno p. 2138 fig. 2
2001Marginocephalia Lambert et al. p. 7
2003Marginocephalia Rauhut p. 16
2004Marginocephalia Weishampel p. 323
2006Marginocephalia Xu et al. p. 2139 fig. 3
2007Marginocephalia Butler et al. p. 2044
2008Marginocephalia Butler et al. p. 22 figs. 2-4
2009Marginocephalia Butler and Sullivan p. 22
2012Marginocephalia Han et al. p. 1391 fig. 14
2018Marginocephalia Madzia et al. p. 973 fig. 4

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
RankNameAuthor
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
Clypeodonta
Cerapoda
Marginocephalia
Marginocephalia

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
P. Dodson 1997...A common character being the presence of a frill, formed by the squamosal and parietal bones, that overhangs the back of the skull...Both groups lack the obturator process, a bony tab on the ischium that supports the pubis.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Maximum body mass: 10000 kgg
Minimum body mass: 3 kgg
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:52
Modified: 2004-12-14 14:50:52
Source: g = genus, o = order
References: Kiessling 2004, Peczkis 1995, Marsh 1875

Age range: base of the Oxfordian to the top of the Lancian or 163.50000 to 66.00000 Ma

Collections (1007 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Oxfordian163.5 - 157.3China (Xinjiang) Hualianceratops wucaiwanensis (175359) Yinlong downsi (72107)
Late/Upper Jurassic163.5 - 145.0China (Hebei) Xuanhuaceratops niei (91320)
Late/Upper Jurassic - Early/Lower Cretaceous163.5 - 100.5Mongolia (Bayankhongor) Psittacosauridae indet. (69914)
Late/Upper Tithonian - Valanginian150.8 - 132.9China (Liaoning) Chaoyangosaurus liaosiensis (10755)
Berriasian145.0 - 139.8Germany (Niedersachsen) Stenopelix valdensis (69694)
Berriasian - Valanginian145.0 - 132.9Mongolia (Ovorhangai) Psittacosaurus sp. (94111)
Neocomian145.0 - 130.0Japan (Fukuoka) Ceratopsia indet. (166076)
Early/Lower Cretaceous145.0 - 100.5Mongolia (Ovorkhangai) Psittacosaurus mongoliensis (48936) Psittacosaurus sp. (59358 70140 79703) Psittacosaurus sp., Protiguanodon mongoliense (48939) Psittacosaurus sp., Psittacosaurus mongoliensis (48937)
Early/Lower Cretaceous145.0 - 100.5China (Nei Mongol) Psittacosaurus guyangensis, Psittacosaurus osborni (49797) Psittacosaurus sp. (85296)
Early/Lower Cretaceous145.0 - 100.5China (Xinjiang) Psittacosaurus sp. (28919) Psittacosaurus xinjiangensis (52158)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Late/Upper Maastrichtian70.6 - 66.0Canada (Alberta) Eotriceratops xerinsularis (75475) Montanoceratops sp. (64791) Pachycephalosaurus sp. (168404)
Late/Upper Maastrichtian70.6 - 66.0Canada (Saskatchewan) Chasmosaurinae indet. (52837) Pachycephalosauridae indet., Triceratops sp. (54105) Triceratops sp. (52836)
Late/Upper Maastrichtian70.6 - 66.0Russian Federation (Chukot) Neoceratopsia indet. (86529)
Late/Upper Maastrichtian70.6 - 66.0USA (Utah) Triceratops sp. (48549)
Late/Upper Maastrichtian70.6 - 66.0USA (Alaska) Pachyrhinosaurus sp. (51889)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Leptoceratops gracilis (73947 73948) Pachycephalosaurus wyomingensis (152397 161171) Triceratops prorsus (14674) Triceratops sp. (67129 88990 109659 162855 189003)
Late/Upper Maastrichtian70.6 - 66.0USA (North Dakota) Triceratops horridus (191374) Triceratops sp. (45123)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Leptoceratops sp. (53824) Triceratops eurycephalus (52107) Triceratops flabellatus (165876) Triceratops sp. (52088 164991 164992 164993) Triceratops sp., Pachycephalosaurus grangeri (14585)
Late/Upper Maastrichtian70.6 - 66.0USA (South Dakota) Tatankaceratops sacrisonorum (97798)
Late/Upper Maastrichtian70.6 - 66.0USA (New Mexico) Ceratopsidae indet. (62529 62531 62532 62534 62546)