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Pegomastax africanus

Reptilia - Heterodontosauridae

Taxonomy
Pegomastax africanus was named by Sereno (2012). Its type specimen is SAM-PK-K10488, a partial skull, and it is a 3D body fossil. Its type locality is Krommespruit, Voisana, which is in a Hettangian/Sinemurian terrestrial siltstone in the Elliot Formation of South Africa. It is the type species of Pegomastax.

Synonymy list
YearName and author
2012Pegomastax africanus Sereno p. 149 figs. 5B, 82-87
2018Pegomastax africana Madzia et al. p. 969

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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
genusPegomastax
speciesafricanus

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.

†Pegomastax africanus Sereno 2012
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Diagnosis
ReferenceDiagnosis
P. C. Sereno 2012Heterodontosaurid ornithischian characterized by the following four autapomorphies: (1) proportionately deep predentary with a dorsal margin about 70% the anteroventral margin; (2) predentary dorsal margin angled anteroventrally at approximately 45°; (3) postcaniniform dentary crowns with an mesially-bowed primary ridge that angles from the apical denticle toward the mesial side of the crown base; (4) slightly concave denticulate crown margins to either side of a prominent apical denticle.
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
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: o = order
Reference: Marsh 1875

Age range: base of the Hettangian to the top of the Sinemurian or 201.30000 to 190.80000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Hettangian - Sinemurian201.3 - 190.8South Africa (Eastern Cape) Heterodontosauridae indet. (type locality: 85486)