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Luluichnus mueckei

Reptilia -

Taxonomy
Luluichnus mueckei was named by Salisbury et al. (2016). It is considered to be a form taxon. Its type specimen is WAM 15.12.701, cast of UQL-DP45-6, a footprint, and it is a trace fossil. Its type locality is Reddell Beach tracksite (UQL-DP45), which is in a Valanginian/Barremian lagoonal sandstone/siltstone in the Broome Sandstone Formation of Australia. It is the type species of Luluichnus.

Synonymy list
YearName and author
2016Luluichnus mueckei Salisbury et al. p. 99

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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
RankNameAuthor
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Genasauria
Thyreophora()
Stegosauria()
genusLuluichnus
speciesmueckei

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
S. W. Salisbury et al. 2016Manus tracks: medium- to large-sized (proximodistal length 11–14 cm, mediolateral width 19.5–22 cm), typically wider than long, with a proximodistal length to maximum mediolateral width ratio of approximately 0.6; overall track morphology oval with indistinct/absent digital impressions; digital pad impressions absent. Pedal tracks: small- to medium-sized (proximodistal length 15–22.5 cm, mediolateral width 16–20.7 cm), tridactyl, mesaxonic, longer than wide (maximum proximodistal length to maximum mediolateral width ratio of 1.0–1.3); individual digital impressions proportionately short (maximum length of each digit impression to maximum proximodistal track length ratio of 0.13–0.35); individual digit impressions fairly broad (maximum width of each digit impression to maximum proximodistal track length ratio of 0.2–0.37); digit II and IV impressions extend subequally relative to the principal track axis; total divarication angle between the axes of the impressions of digits II and IV 30–55°; divarication of axes between impressions of digits II and III (21–35°) and digits III and IV (15–39°) approximately the same. Trackway (quadrupedal): pace angulation of pedal track approximately 133° (129–142°); pedal track stride length approximately 5.8 times the maximum pes length; pedal track pace length approximately 3.3 times the pedal track length. Pedal tracks can be laterally or medially rotated relative to the trackway orientation; manual tracks laterally rotated, and directed craniolateral relative to the trackway orientation.