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Eocursor parvus

Reptilia

Taxonomy
Eocursor parvus was named by Butler et al. (2007). Its type specimen is SAM-PK-K8025, a partial skeleton, and it is a 3D body fossil. Its type locality is farm Damplaats (55), Ladybrand, which is in a Hettangian/Sinemurian dry floodplain siltstone/sandstone in the Elliot Formation of South Africa.

Synonymy list
YearName and author
2007Eocursor parvus Butler et al. pp. 2041-2042 figs. 1-2
2009Eocursor parvus Butler and Sullivan p. 22
2010Eocursor parvus Butler
2012Eocursor parvus Han et al. p. 1391 fig. 14
2014Eocursor parvus Delsate and Ezcurra p. 178
2014Eocursor parvus Marzola and Dalla Vecchia p. 13
2016Eocursor parvus Becerra et al. p. 564
2016Eocursor parvus Griffin and Nesbitt p. 6
2017Eocursor parvus Ezcurra p. 514
2020Eocursor parvus Breeden and Rowe p. 1
2020Eocursor parvus Desojo et al. p. 25
2020Eocursor parvus Moro et al.
2021Eocursor parvus Breeden et al. p. 29

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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()
—Genasauria
genusEocursor
speciesparvus

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.

†Eocursor parvus Butler et al. 2007
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Diagnosis
ReferenceDiagnosis
R. J. Butler et al. 2007A basal ornithischian distinguished by the following autapomorphies: accessory fossa present on lateral surface of basisphenoid, posterior to the canal for the internal carotid artery; maximum transverse expansion of the distal end of the humerus is only 50% of maximum transverse expansion of proximal humerus; and pubic obturator foramen subcircular and enlarged (maximum dorsoventral diameter of foramen is twice the maximum diameter of proximal pubic shaft). Eocursor can additionally be distinguished from all other basal ornithischian taxa by a unique combination of derived and plesiomorphic features.
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 (Free State) Ornithischia indet. (type locality: 73887)