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Skartopus

Reptilia -

Taxonomy
Skartopus was named by Thulborn and Wade (1984). It is considered to be a form taxon.

It was assigned to Coelurosauria by Thulborn and Wade (1984); and to Theropoda by Lockley (1992) and Gierlinski et al. (2009).

Synonymy list
YearName and author
1984Skartopus Thulborn and Wade p. 427
1992Skartopus Lockley p. 277
2009Skartopus Gierlinski et al. p. 222

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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
RankNameAuthor
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
genusSkartopus

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
R. A. Thulborn and M. Wade 1984(ichnogenus and ichnospecies): trackway of small digitigrade biped, with pace anguation about 150°. Footprint size index (SI) between 2.9 and 5.7 cm. No imprints of hand or tail. Footprints tridactyl (digits 2, 3 and 4), slightly longer than broad, (ratio FW/FL about 0.95) showing distinct positive rotation. Digit imprints narrow, straight and sharply pointed, without indications of phalangeal pads. Digit 3 longest; digits 2 and 4 about equal in length, and almost equally divergent from digit 3 (both interdigital angles abetween 25° and 30°). Imprint of digit 4 extends slightly farther back than imprint of digit 2, but does not form a posterior salient or 'spur'. Traces of small interdigital webs sometimes present. Posterior margin of footprint is an oblique line (posterolateral to anteromedial), either straight or arched forwards. In some examples there is an imprint of the metapodium: this is sub-rectangular in outline and roughly equivalent in length to digit 3. Ratio PL/FL usually between 5.5 and 8.5, rarely as low as 5.2 or as high as 9.1; ratio SL/FL usually between 11.0 and 16.0, rarely as low as 10.6 or as high as 17.3.