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Monstersauria

Reptilia

Synonymy list
YearName and author
1997Monstersauria Norell and Gao
2000Monstersauria Gao and Norell p. 92
2000Monstersauria Nydam
2002Monstersauria Nydam p. 652
2013Monstersauria Yi and Norell
2015Monstersauria Park et al. p. 293
2023Monstersauria Hamilton et al. p. 5

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
RankNameAuthor
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Squamata()
—Anguimorpha(Fürbringer 1900)
—Monstersauria
—Monstersauria

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.

Unr. Monstersauria Norell and Gao 1997
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G. †Asprosaurus Park et al. 2015
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†Asprosaurus bibongriensis Park et al. 2015
G. †Chianghsia Mo et al. 2012
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†Chianghsia nankangensis Mo et al. 2012
G. †Estesia Norell et al. 1992
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†Estesia mongoliensis Norell et al. 1992
G. †Eurheloderma Hoffstetter 1957
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†Eurheloderma gallicum Hoffstetter 1957
G. †Gobiderma Borsuk-Bialynicka 1984
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†Gobiderma pulchra Borsuk-Bialynicka 1984
G. †Lowesaurus Pregill et al. 1986
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†Lowesaurus matthewi Gilmore 1928
G. †Morohasaurus Ikeda et al. 2022
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†Morohasaurus kamitakiensis Ikeda et al. 2022
G. †Palaeosaniwa Gilmore 1928
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†Palaeosaniwa canadensis Gilmore 1928
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Invalid names: Megasaurus robustus Gilmore 1928 [synonym]
Invalid names: Megasaurus Gilmore 1928 [synonym]
G. †Paraderma Estes 1964
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†Paraderma bogerti Estes 1964
G. †Primaderma Nydam 2000
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†Primaderma nessovi Nydam 2000
Diagnosis
ReferenceDiagnosis
S. M. Hamilton et al. 2023Anguimorph lizards typically with thick, polygonal, nonimbricating, non-compound osteoderms bearing ridge-and-pit ornamentation but not keels or tubercles, fused to the frontal and other bones of the skull roof. Frontals remain paired in adults. Cristae cranii are well-developed but typically do not meet ventrally to enclose the olfactory canal.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialuc
Locomotion: actively mobilec
Created: 2017-04-17 15:15:35
Modified: 2017-04-17 15:15:35
Source: c = class, subp = subphylum, uc = unranked clade
References: Carroll 1988, Hendy et al. 2009

Age range: base of the Early/Lower Albian to the top of the Whitneyan or 112.03000 to 30.80000 Ma

Collections (60 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Albian112.03 - 109.0Japan (Hyogo) Morohasaurus kamitakiensis (224255)
Early/Lower Cenomanian99.6 - 93.5USA (Utah) Necrosauridae indet. (14396) Primaderma nessovi (14398 14402 14405)
Santonian - Campanian86.3 - 72.1South Korea (Jeollanam-do) Asprosaurus bibongriensis (52981)
Campanian83.6 - 72.1Mongolia (Omnogov) Gobiderma pulchrum (68516)
Campanian83.6 - 72.1Mongolia (Omngov) Estesia mongoliensis (68525)
Late/Upper Campanian83.5 - 70.6Mexico (Baja California) Palaeosaniwa canadensis (197021)
Late/Upper Campanian83.5 - 70.6Mongolia (Omnogov Aimak) Estesia mongoliensis, Gobiderma pulchrum (37184)
Late/Upper Campanian83.5 - 70.6Canada (Alberta) Monstersauria indet. (227125) Palaeosaniwa canadensis (45674 45822 45892 45893 45897 187421 232291) Palaeosaniwa sp. (22699) Paraderma bogerti (45899)
Late/Upper Campanian83.5 - 70.6Mexico (Coahuila) Paraderma bogerti, Palaeosaniwa canadensis (154244)
Middle Campanian83.5 - 70.6Canada (Alberta) Palaeosaniwa canadensis (45561 45565 45566 45820 118024) Paraderma bogerti (45670)
Middle Campanian - Late/Upper Campanian83.5 - 70.6Mongolia (Omnogov) Estesia mongoliensis, Gobiderma pulchrum (62913 62914) Gobiderma pulchra (13776 28243)
Middle Campanian - Late/Upper Campanian83.5 - 70.6Canada (Saskatchewan) Palaeosaniwa sp. (229975)
Middle Campanian - Late/Upper Campanian83.5 - 70.6USA (Montana) Paraderma bogerti (14446)
Middle Campanian - Late/Upper Campanian83.5 - 70.6Canada (Alberta) Palaeosaniwa canadensis (45819 45894 62722) Paraderma bogerti, Palaeosaniwa canadensis (45821)
Maastrichtian72.1 - 66.0China (Jiangxi) Chianghsia nankangensis (114966)
Lancian70.6 - 66.0USA (Wyoming) Megasaurus robustus (14606) Paraderma bogerti (14519 14538 14566) Paraderma sp. (14514)
Lancian70.6 - 66.0USA (North Dakota) Palaeosaniwa canadensis (137715)
Lancian70.6 - 66.0Canada (Alberta) Paraderma bogerti (14630)
Lancian70.6 - 66.0USA (Montana) Palaeosaniwa canadensis (14568 179991) Paraderma bogerti (14535)
Lancian70.6 - 66.0Canada (Saskatchewan) Paraderma bogerti (14655)
Late/Upper Maastrichtian70.6 - 66.0USA (South Dakota) Palaeosaniwa sp. (224484)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Paraderma bogerti (14585)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Paraderma bogerti (13142)
Ti361.7 - 56.8Canada (Alberta) Palaeosaniwa sp. (14992)
Bartonian41.3 - 38.0France (Quercy, Midi-Pyrenees Region) Eurheloderma gallicum (12840)
Priabonian38.0 - 33.9France (Quercy, Midi-Pyrenees region) Eurheloderma gallicum (12853)
Priabonian38.0 - 33.9France (Quercy, Midi-Pyrenees Region) Eurheloderma sp., Eurheloderma gallicum (12849)
MP 1937.2 - 33.9France (Quercy, Midi-Pyrenees Region) Eurheloderma gallicum (12846)
Late/Upper Eocene - Early/Lower Miocene37.2 - 15.97France (Languedoc-Roussillon-Midi-Pyrénées) Eurheloderma gallicum (179194)
Orellan33.9 - 33.3USA (Colorado) Heloderma matthewi (180029)
Whitneyan33.3 - 30.8USA (Nebraska) Heloderma matthewi (17391)