Sexually Dimorphic Bandicoots (Marsupialia: Peramelemorphia) From the Oligo-Miocene of Australia, First Cranial Ontogeny for Fossil Bandicoots and New Species Descriptions

Travouillon, Kenny J.; Archer, Michael; Hand, Suzanne J.; Muirhead, Jeanette

doi:10.1007/s10914-014-9271-8

Cited by 21 publications

(44 citation statements)

References 40 publications

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“…Peroryctes tedfordi 33, early–middle Miocene Kutjamarcoot 14, Madju 13, Liyamayi 12, Crash 12, Galadi amplus 18, and late Oligocene Bulungu campbelli 16 by its retention of a ‘complete’ centrocrista with continuous postparacristae-premetacristae on all upper molars. The centrocrista is incomplete on M3 of the early Miocene Galadi speciosus 17, and is formed by residual buccal crests on M3 of the early Miocene Bulungu palara 15.…”

Section: Resultsmentioning

confidence: 99%

“…Such arguments are inferred from the fossil record, which has yielded no generically referable crown taxa older than the early Pliocene311. Fossil evidence of extant higher-level clades is also extremely sparse, consisting of isolated dental remnants from the middle Miocene putative basal peramelid Crash 12 and thylacomyid Liyamayi 12, as well as cranial-mandibular elements of the early–middle Miocene stem perameloids Madju 13 and Kutjamarcoot 14. Conversely, all other pre-Pliocene peramelemorphians are usually placed outside of Perameloidea, including the early Miocene Bulungu 1516, Galadi 1718, and a markedly plesiomorphic family-level grouping Yaralidae, which is composed of two species, Yarala burchfieldi from the early–middle Miocene1920, and the late Oligocene Y. kida 21.…”

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confidence: 99%

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Bandicoot fossils and DNA elucidate lineage antiquity amongst xeric-adapted Australasian marsupials

Kear

Aplin

Westerman

2016

Sci Rep

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Bandicoots (Peramelemorphia) are a unique order of Australasian marsupials whose sparse fossil record has been used as prima facie evidence for climate change coincident faunal turnover. In particular, the hypothesized replacement of ancient rainforest-dwelling extinct lineages by antecedents of xeric-tolerant extant taxa during the late Miocene (~10 Ma) has been advocated as a broader pattern evident amongst other marsupial clades. Problematically, however, this is in persistent conflict with DNA phylogenies. We therefore determine the pattern and timing of bandicoot evolution using the first combined morphological + DNA sequence dataset of Peramelemorphia. In addition, we document a remarkably archaic new fossil peramelemorphian taxon that inhabited a latest Quaternary mosaic savannah-riparian forest ecosystem on the Aru Islands of Eastern Indonesia. Our phylogenetic analyses reveal that unsuspected dental homoplasy and the detrimental effects of missing data collectively obscure stem bandicoot relationships. Nevertheless, recalibrated molecular clocks and multiple ancestral area optimizations unanimously infer an early diversification of modern xeric-adapted forms. These probably originated during the late Palaeogene (30–40 Ma) alongside progenitors of other desert marsupials, and thus occupied seasonally dry heterogenous habitats long before the onset of late Neogene aridity.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Bandicoot fossils and DNA elucidate lineage antiquity amongst xeric-adapted Australasian marsupials

Kear

Aplin

Westerman

2016

Sci Rep

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“…Faunal and lithostratigraphic terminology of South Australian Oligo-Miocene deposits follows Woodburne et al (1993). The age of the Kutjamarpu Local Fauna (LF), Wipajiri Formation, is considered to be early to middle Miocene following , Black et al (2012bBlack et al ( , 2013, and Travouillon et al (2015).…”

Section: Methodsmentioning

confidence: 99%

A new species of Miocene wombat (Marsupialia, Vombatiformes) from Riversleigh, Queensland, Australia, and implications for the evolutionary history of the Vombatidae

Brewer

Archer

Hand

et al. 2018

Palaeontol Electron

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“…A dated molecular phylogeny of Peramelemorphia has estimated that Chaeropodidae diverged from bandicoots (Peramelidae) and bilbies (Thylacomyidae) sometime in the mid-Late Oligocene [9]. While this estimate is over 20 million years before the oldest fossils for the family presented here, a xeric origin for this family would explain why no such fossils have been recovered, as most of the fossil Peramelemorphian have been recovered from fossil localities in more mesic environments [12,13]. With such a limited fossil record for the family, C. baynesi is especially valuable for the understanding of the evolution of this group.…”

Section: Discussionmentioning

confidence: 99%

“…Dental nomenclature follows Travouillon et al [12]. Specimens are registered with Museum Victoria, Melbourne, Australia.…”

Section: Introductionmentioning

confidence: 99%

Oldest fossil remains of the enigmatic pig-footed bandicoot show rapid herbivorous evolution

Travouillon

2016

R. Soc. open sci.

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The pig-footed bandicoot, Chaeropus ecaudatus, is one of the most enigmatic Australian marsupials, which went extinct in the late 1950s probably as a result of European colonization. It is unusual in being the only marsupial to have evolved reduction of digits on both fore and hind feet, with the forefeet being pig-like (two toes) and the hind feet being horse-like (one toe). According to molecular phylogenetic analyses, Chaeropus diverged from other bandicoots (Peramelidae), and the bilbies (Thylacomyidae) by the mid-Late Oligocene. This is considerably earlier than suggested by the fossil record, with the current oldest specimens being Late Pleistocene in age. Here, I report the oldest fossils of Chaeropus, representing a new species, Chaeropus baynesi from the Late Pliocene to Early Pleistocene (2.47–2.92 Ma) Fisherman's Cliff Local Fauna, Moorna Formation, New South Wales, Australia, and extending the fossil record of the genus and family by at least 2 million years. Chaeropus baynesi is less high crowned than C. ecaudatus and lacks lateral blade development on lower molars, suggesting that it was unlikely to be grazing. This suggests that Chaeropus must have adapted rapidly to the drying conditions and changes in environments, and would have become a grazer in a very short period of time.

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Sexually Dimorphic Bandicoots (Marsupialia: Peramelemorphia) From the Oligo-Miocene of Australia, First Cranial Ontogeny for Fossil Bandicoots and New Species Descriptions

Cited by 21 publications

References 40 publications

Bandicoot fossils and DNA elucidate lineage antiquity amongst xeric-adapted Australasian marsupials

Bandicoot fossils and DNA elucidate lineage antiquity amongst xeric-adapted Australasian marsupials

A new species of Miocene wombat (Marsupialia, Vombatiformes) from Riversleigh, Queensland, Australia, and implications for the evolutionary history of the Vombatidae

Oldest fossil remains of the enigmatic pig-footed bandicoot show rapid herbivorous evolution

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