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Wakaleo oldfieldi

Osteichthyes - Diprotodontia - Thylacoleonidae

Taxonomy
Wakaleo oldfieldi was named by Clemens and Plane (1974). Its type specimen is SAM P 17925, a mandible (left dentary fragment containing incison, P3, M1 and alveoli from M2, M3), and it is a 3D body fossil. Its type locality is Leaf locality, Lake Ngapakaldi, which is in an Oligocene/Miocene fluvial-lacustrine horizon in the Wipajiri Formation of Australia. It is the type species of Wakaleo.

Sister species lacking formal opinion data

Synonymy list
YearName and author
1974Wakaleo oldfieldi Clemens and Plane
2014Wakaleo oldfieldi Gillespie et al. p. 514 figs. 2-4
2019Wakaleo oldfieldi Gillespie et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
RankNameAuthor
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
subclassMetatheria()
Marsupialiformes
Marsupialia()
AustralidelphiaSzalay 1982
orderDiprotodontiaOwen 1866
suborderVombatiformesBurnett 1830
familyThylacoleonidaeGill 1872
genusWakaleo
speciesoldfieldi

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.

Wakaleo oldfieldi Clemens and Plane 1974
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Diagnosis
ReferenceDiagnosis
A. K. Gillespie et al. 2014Wakaleo oldfieldi differs from W. vanderleueri and W. alcootaensis in having a smaller P3. It also differs from W. vanderleueri in having; a smaller P3:M1 ratio (P3:M1 < 1.6; P3:M1 < 1.4); a shorter and relatively broader M3, which is subrectangular in outline with a rugose talonid basin; a more angular posterior edge of M1 in the region of the metaconule; and a relatively shorter apical cusp of M1 (compared with molar length and the height of the talonid basin). Further, W. oldfieldi lacks an anterior cingulum on M3, and the buccal margins of M1‒2 are less developed than they are in W. vanderleueri such that the paracone is only slightly taller than the metacone and moderately taller than the protocone.