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Pareisactus evrostos

Reptilia - Rhabdodontidae

Taxonomy
Pareisactus evrostos was named by Párraga and Prieto-Márquez (2019). Its type specimen is MCD 5371, a set of postcrania (left scapula), and it is a 3D body fossil. It is the type species of Pareisactus.

Synonymy list
YearName and author
2019Pareisactus evrostos Párraga and Prieto-Márquez p. 249 figs. 2-3

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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
Diapsida()
RankNameAuthor
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
Ornithopoda()
Iguanodontia()
Rhabdodontomorpha
familyRhabdodontidae
genusPareisactus
speciesevrostos

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
J. Párraga and A. Prieto-Márquez 2019Basal iguanodontian ornithopod possessing the following autapomorphies: scapula with
dorsoventral extent of proximal constriction (scapular ‘neck’) as deep as it is thick; lateral surface of proximal scapula under acromion process forming deep and thick roof over extremely deep deltoid fossa; long glenoid apex accounting for half of maximum depth of proximal region of scapula. Pareisactus evrostos differs from dryomorphan ornithopods in combining realtively long craniodorsally projected acromion process, craniocaudally short scapular ‘neck’, and glenoid apex that is strongly offset caudally from level of craniodorsal tip of the acromion process. It differs from other pre-dryomorphan ornithopods in the autapomorphies listed above.
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: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:40:05
Modified: 2009-01-03 22:40:05
Source: subo = suborder, o = order
References: Benton 1983, Marsh 1875

Age range: Early/Lower Maastrichtian or 70.60000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Early/Lower Maastrichtian70.6 - 66.0Spain (Cataluña) Pareisactus evrostos (148953)