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dc.contributor.authorBeck, RMD
dc.contributor.authorLouys, J
dc.contributor.authorBrewer, Philippa
dc.contributor.authorArcher, M
dc.contributor.authorBlack, KH
dc.contributor.authorTedford, RH
dc.date.accessioned2020-10-15T13:13:17Z
dc.date.available2020-10-15T13:13:17Z
dc.date.issued2020-06-25
dc.date.submitted2020-10-13
dc.identifier.citationBeck, R.M.D., Louys, J., Brewer, P. et al. A new family of diprotodontian marsupials from the latest Oligocene of Australia and the evolution of wombats, koalas, and their relatives (Vombatiformes). Sci Rep 10, 9741 (2020). https://doi.org/10.1038/s41598-020-66425-8en_US
dc.identifier.doi10.1038/s41598-020-66425-8
dc.identifier.urihttp://hdl.handle.net/10141/622858
dc.description.abstractWe describe the partial cranium and skeleton of a new diprotodontian marsupial from the late Oligocene (~26–25 Ma) Namba Formation of South Australia. This is one of the oldest Australian marsupial fossils known from an associated skeleton and it reveals previously unsuspected morphological diversity within Vombatiformes, the clade that includes wombats (Vombatidae), koalas (Phascolarctidae) and several extinct families. Several aspects of the skull and teeth of the new taxon, which we refer to a new family, are intermediate between members of the fossil family Wynyardiidae and wombats. Its postcranial skeleton exhibits features associated with scratch-digging, but it is unlikely to have been a true burrower. Body mass estimates based on postcranial dimensions range between 143 and 171 kg, suggesting that it was ~5 times larger than living wombats. Phylogenetic analysis based on 79 craniodental and 20 postcranial characters places the new taxon as sister to vombatids, with which it forms the superfamily Vombatoidea as defined here. It suggests that the highly derived vombatids evolved from wynyardiid-like ancestors, and that scratch-digging adaptations evolved in vombatoids prior to the appearance of the ever-growing (hypselodont) molars that are a characteristic feature of all post-Miocene vombatids. Ancestral state reconstructions on our preferred phylogeny suggest that bunolophodont molars are plesiomorphic for vombatiforms, with full lophodonty (characteristic of diprotodontoids) evolving from a selenodont morphology that was retained by phascolarctids and ilariids, and wynyardiids and vombatoids retaining an intermediate selenolophodont condition. There appear to have been at least six independent acquisitions of very large (>100 kg) body size within Vombatiformes, several having already occurred by the late Oligocene.en_US
dc.language.isoenen_US
dc.publisherSpringer Science and Business Media LLCen_US
dc.relation.urihttps://www.nature.com/articles/s41598-020-66425-8en_US
dc.rightsopenAccessen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleA new family of diprotodontian marsupials from the latest Oligocene of Australia and the evolution of wombats, koalas, and their relatives (Vombatiformes)en_US
dc.typeJournal Articleen_US
dc.identifier.eissn2045-2322
dc.identifier.journalScientific Reportsen_US
dc.identifier.volume10en_US
dc.identifier.issue1en_US
pubs.organisational-group/Natural History Museum
pubs.organisational-group/Natural History Museum/Science Group
pubs.organisational-group/Natural History Museum/Science Group/Earth Sciences
pubs.organisational-group/Natural History Museum/Science Group/Functional groups
pubs.organisational-group/Natural History Museum/Science Group/Functional groups/Other Support
dc.embargoNot knownen_US
elements.import.authorBeck, RMDen_US
elements.import.authorLouys, Jen_US
elements.import.authorBrewer, Pen_US
elements.import.authorArcher, Men_US
elements.import.authorBlack, KHen_US
elements.import.authorTedford, RHen_US
dc.description.nhmOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en_US
dc.subject.nhmpalaeontologyen_US
dc.subject.nhmPhylogeneticsen_US
dc.subject.nhmTaxonomyen_US
refterms.dateFOA2020-10-15T13:13:17Z


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