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Heterodontosaurinae

Reptilia - Heterodontosauridae

Taxonomy
Heterodontosaurinae was named by Sereno (2012) [Based off Heterodontosauridae Kuhn 1966/Romer 1966 but not strictly an elevation of rank.]. Its type is Heterodontosaurus.

It was assigned to Heterodontosauridae by Sereno (2012); and to Pachycephalosauria by Dieudonné et al. (2020).

Synonymy list
YearName and author
2012Heterodontosaurinae Sereno p. 68
2020Heterodontosaurinae Dieudonné et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
RankNameAuthor
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
familyHeterodontosauridae
subfamilyHeterodontosaurinae
subfamilyHeterodontosaurinae

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.

Subfm. †Heterodontosaurinae Sereno 2012
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G. †Abrictosaurus Hopson 1975
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†Abrictosaurus consors Thulborn 1974
G. †Fruitadens Butler et al. 2010
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†Fruitadens haagarorum Butler et al. 2010
G. †Heterodontosaurus Crompton and Charig 1962
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†Heterodontosaurus tucki Crompton and Charig 1962
G. †Lycorhinus Haughton 1924
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†Lycorhinus angustidens Haughton 1924
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Invalid names: Lanasaurus scalpridens Gow 1975 [synonym]
Invalid names: Lanasaurus Gow 1975 [synonym]
Diagnosis
ReferenceDiagnosis
P. C. Sereno 2012Small-bodied ornithischians with the following features that likely would constitute synapomorphies in phylogenetic context: (1) cheek tooth crowns that are taller than wide, (2) jaw joint set below the axis of occlusion between maxillary and dentary teeth.
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: 3 kgg
Minimum body mass: 1 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: Peczkis 1995, Marsh 1875

Age range: base of the Norian to the top of the Early/Lower Tithonian or 228.00000 to 145.00000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Norian228.0 - 208.5Argentina (Santa Cruz) Heterodontosauria indet. (139580)
Hettangian - Sinemurian201.3 - 190.8Lesotho (Qacha's Nek) Lycorhinus consors (69695)
Hettangian - Sinemurian201.3 - 190.8South Africa (Free State) Lanasaurus scalpridens (48828)
Hettangian - Sinemurian201.3 - 190.8South Africa (Eastern Cape) Heterodontosaurus tucki (49394 85486 224194) Lycorhinus angustidens (36669 69696) Lycorhinus angustifrons (137299)
Sinemurian199.3 - 190.8South Africa (Eastern Cape) Heterodontosaurus tucki (59339)
Sinemurian - Pliensbachian199.3 - 182.7South Africa (Free State) Heterodontosaurus sp. (232327)
Pliensbachian190.8 - 182.7Lesotho (Mafeteng) Lycorhinus sp. (137297)
Pliensbachian190.8 - 182.7Mexico (Tamaulipas) Heterodontosaurus sp. (136967)
Tithonian152.1 - 145.0USA (Colorado) Fabrosauridae indet. (53040)
Early/Lower Tithonian150.8 - 145.0USA (Colorado) Fabrosauridae indet. (71476) Fruitadens haagarorum (92360)
Early/Lower Tithonian150.8 - 145.0USA (Utah) Fruitadens sp. (191718)