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Aquatilavipes swiboldae

Reptilia - Avetheropoda - Avipedidae

Taxonomy
Aquatilavipes swiboldae was named by Currie (1981). It is considered to be a form taxon. Its type specimen is BCPM 744, PMA P79.23.37 (now RTMP), a footprint, and it is a trace fossil. Its type locality is north shore, Peace River Canyon, which is in an Aptian terrestrial siltstone in the Gething Formation of Canada. It is the type species of Aquatilavipes.

Synonymy list
YearName and author
1981Aquatilavipes swiboldae Currie p. 259 figs. 1-2
1992Aquatilavipes swiboldae Lockley p. 274
2001Aquatilavipes swiboldae McCrea and Sarjeant p. 461
2002Aquatilavipes swiboldae Azuma et al. p. 3
2009Aquatilavipes swiboldae Anfinson et al. p. 890

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
RankNameAuthor
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptora
Paraves
classAves
familyAvipedidaeSarjeant and Langston 1994
genusAquatilavipes
speciesswiboldae

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. T. McCrea and W. A. S. Sarjeant 2001A species of Aquatilavipes of small size, with slim digits; the thickness of the slimmest digit (III) is less than 8% of its length, the others being somewhat thicker (up to 12.5‡ of length). All digits terminate in claws, that on digit III being especially acute. The digits were flexible, digits II and III generally curving inward distally, digit IV outward. Digit III is about 50% longer than digit II and 40% longer than digit IV. Total interdigital span varies from 90° to 130°, averaging 113°.
The angle of the footprints to the center of the trackway (footprint rotation) varies, but they tend to be directed inward. The trackway is of moderate breadth.