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Garbina roeorum

Reptilia -

Taxonomy
Garbina roeorum was named by Salisbury et al. (2016). It is considered to be a form taxon. Its type specimen is WAM 12.1.19-20, cast of UQL-DP14-1, a footprint, and it is a trace fossil. Its type locality is UQL-DP14 tracksite (PROXY), which is in a Valanginian/Barremian delta plain sandstone in the Broome Sandstone Formation of Australia. It is the type species of Garbina.

Synonymy list
YearName and author
2016Garbina roeorum Salisbury et al. p. 88

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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()
genusGarbina
speciesroeorum

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. 2016Manual tracks: medium- to large-sized (proximodistal length 11.9–21.4 cm, mediolateral width 17.2–25.4 cm), tetradactyl, paraxonic, typically wider than long, with an maximum proximodistal length to maximum mediolateral width ratio of 0.6–1.1; individual manual digital impressions proportionately short and broad (the maximum width of each digital impression 16–50% of the total track length); apex of each digital impression blunt to slightly tapered; impressions of digits II and III extend subequally (i.e., paraxonic) distally beyond the impression of digits I and IV by about one-third the maximum track length; impression of digit I often positioned more distal relative to the impression of digit IV; impressions of digits II, III, and IV subequal in size, with the impression of digit I typically narrower; total divarication angle between the axes of the impressions of digits I and IV 137–170°; divarication of axes between digital impressions variable (12–60°, 39–78°, and 26–54° for I^II, II^III, and III^IV, respectively); proximal track margin variable in shape; metacarpodigital pad impression may or may not be present; impressions of digital pads and unguals impressions absent; manual impressions occur craniolateral to pedal tracks, but placement can vary; manual impressions may be absent, only faintly impressed, or as deeply impressed as associated pedal impressions. Pedal tracks: medium- to very large-sized (length of unified digital-metatarsodigital portion of track 25.8–44 cm; total length of tracks that include a metatarsal pad impression 42–80 cm; width 32.5–70 cm), tridactyl, mesaxonic (toe extension to track length ratio 0.14–0.21), typically wider than long for the unified digital-metatarsodigital portion of the track, with a maximum proximodistal length to maximum mediolateral width ratio of 0.54-0.9, or longer than wide when the metatarsal pad is impressed with a maximum length to maximum width ratio of 1.1–1.7; individual digital impressions proportionately short (the maximum length of each digital impression 17–51% of the total track length excluding the metatarsal pad impression) and broad (the maximum width of each digital impression 17–40% of the total track length excluding the metatarsal pad impression), and rounded distally; impression of digit III extends distally beyond the impressions of digits II and IV by 14–21% of the total track length excluding the metatarsal pad impression; hypex of the impressions of digits III and IV usually broader than that of digits II and III, and more pronounced in bipedal pedal track; total divarication angle between the axes of impressions of digits II and IV 57–93°; divarication of axes between impressions of digits II and III (27–46°) and III and IV (30–50°) similar; when present, the metatarsal pad impression is wide and irregularly shaped; when absent, the metatarsal pad impression is gently convex distally, and continuous with the proximal margin of the impression of the unified digital-metatarsodigital pad; impressions of digital pads and unguals absent. Trackway (quadrupedal): manual track pace length approximately 2–6 times maximum manual track length; manual track stride length approximately 3–5 times maximum manual track length; manual tracks inwardly rotated, or directed cranially relative to the trackway orientation; metatarsal pad impression present in ‘quadrupedal’ tracks; pace angulation of pedal track is approximately 133° (129–142°); pedal pace length (excluding metatarsal pad) approximately 3 times pedal track length; pedal track stride length approximately 3–5 times the maximum pedal track length (excluding metatarsal pad). Trackway (bipedal): the metatarsal pad impression absent; pedal track pace length approximately two times the maximum pedal track length; pedal tracks inwardly rotated relative to trackway orientation; trackway is ‘narrow’-gauge, with the medial margin of the pedal tracks crossing the trackway midline.