Review of the marsupials (Mammalia: Metatheria) from the late Paleogene (Chadronian–Arikareean: late Eocene–late Oligocene) of North America

Korth, William W.

doi:10.1007/s12542-017-0396-y

Cited by 5 publications

(24 citation statements)

References 33 publications

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“…Materials.-Fitterer Ranch: USNM 643457, partial maxilla with M3-M4; NDGS 2966, maxilla with M2-M4; NDGS Remarks.-The arrangement of the stylar cusps on the upper molars of the sample of H. fugax from Fitterer Ranch does not differ markedly from that reported from elsewhere (Fox, 1983;Korth, 1994Korth, , 2018Hayes, 2005). In size (Tables 1, 2), the cheek teeth are closest to the later-occurring samples of H. fugax from the Whitneyan (Korth, 2018, supplementary tables 7, 8) and Arikareean (Hayes, 2005, table 1) and smaller than the Orellan samples (Korth, 1994, table 4).…”

Section: Systematic Paleontologymentioning

confidence: 80%

“…M1 is as previously described (Korth, 1994(Korth, , 2018, being slightly longer than wide. Stylar cusps B and D are present on nearly all specimens (92% and 85%, respectively) and are the largest of the stylar cusps ( Fig.…”

Section: Systematic Paleontologymentioning

confidence: 88%

“…Remarks.-This species has only been definitely reported from the Arikareean John Day Formation of Oregon (Stock and Furlong, 1922;Korth, 2018).…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…Description.-The dentition of H. fugax is described in detail elsewhere (Fox, 1983;Korth, 1994Korth, , 2018Hayes, 2005). The following description is focused on observed variations from those descriptions and the morphology of previously undescribed deciduous premolars.…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…In size (Tables 1, 2), the cheek teeth are closest to the later-occurring samples of H. fugax from the Whitneyan (Korth, 2018, supplementary tables 7, 8) and Arikareean (Hayes, 2005, table 1) and smaller than the Orellan samples (Korth, 1994, table 4). It has been noted that through time, the overall size of the dentition of H. fugax decreased from the Orellan through the Arikareean (Korth, 1994(Korth, , 2018Hayes, 2005). This suggests that the Fitterer Ranch sample is closer to these later-occurring populations rather than the typical Orellan samples that are larger (Korth, 1994, fig. 2).…”

Section: Systematic Paleontologymentioning

confidence: 99%

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Marsupials (Mammalia, Metatheria) from the Brule Formation (Whitneyan, Oligocene) North Dakota

2020

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Abstract Five marsupial species are recognized from the Brule Formation at two localities in southwestern North Dakota: Fitterer Ranch and Obritsch Ranch (middle Oligocene; Whitneyan North American Land Mammal Age [NALMA]). The herpetotheriids Herpetotherium fugax Cope, 1873a, Copedelphys superstes new species, and the peradectid Nanodelphys hunti (Cope, 1873b) are represented at both localities. A fourth species is H. sp., cf. H. merriami (Stock and Furlong, 1922), represented by a single specimen from Fitterer Ranch, being limited elsewhere to the later Arikareean NALMA. A fifth species is represented by two isolated lower cheek teeth, interpreted as m1s, from Fitterer Ranch that are unique in lacking a trigonid (only two cusps present) while having a well-developed talonid. These specimens are referred to an indeterminate herpetotheriine species. The new species of Copedelphys is distinct from other species of the genus in that the anterior two lower molars are enlarged relative to the posterior molars. Overall, this new species is more similar in proportions to the latest Eocene (Chadronian) C. titanelix (Matthew, 1903) than the Oligocene (Orellan and Whitneyan) C. stevensoni (Cope, 1873b). This study adds a third and fourth Whitneyan marsupial fauna from the Great Plains region of North America, increases the known diversity of Whitneyan marsupials, and provides further evidence that marsupial diversity during the late Paleogene in North America was relatively stable until the late early Arikareean NALMA. UUID: http://zoobank.org/b8534802-b9ed-4120-baca-fc72917f7d6a

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Section: Systematic Paleontologymentioning

confidence: 80%

Section: Systematic Paleontologymentioning

confidence: 88%

“…Remarks.-This species has only been definitely reported from the Arikareean John Day Formation of Oregon (Stock and Furlong, 1922;Korth, 2018).…”

Section: Systematic Paleontologymentioning

confidence: 99%

Section: Systematic Paleontologymentioning

confidence: 99%

Section: Systematic Paleontologymentioning

confidence: 99%

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Marsupials (Mammalia, Metatheria) from the Brule Formation (Whitneyan, Oligocene) North Dakota

2020

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Taxonomy and evolutionary history of peradectids (Metatheria): New data from the early Eocene of France

Gernelle,

Billet,

Gheerbrant

et al. 2024

J Mammal Evol

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Craniodental Morphology and Phylogeny of Marsupials

Beck

Voss

Jansa

2022

Bulletin of the American Museum of Natural History

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The current literature on marsupial phylogenetics includes numerous studies based on analyses of morphological data with relatively limited sampling of Recent and fossil taxa, and many studies based on analyses of molecular data that include a dense sampling of Recent taxa, but relatively few that combine both data types. Another dichotomy in the 9 2021) belonging to seven clades that are currently ranked as orders in the Linnean hierarchy (Table 1; Aplin and Archer, 1987;Wilson and Reeder, 2005;Burgin et al., 2018;Eldridge et al., 2019): Didelphimorphia (opossums), Paucituberculata (shrew opossums), Microbiotheria (the "monito del monte" Dromiciops gliroides), Dasyuromorphia (predominantly carnivorous forms such as quolls, antechinuses, dunnarts, the Tasmanian devil, the numbat, and the recently extinct thylacine), Diprotododontia (possums, gliders, kangaroos, wallabies, rat kangaroos, wombats, koalas, etc.), Notoryctemorphia (marsupial moles), and Peramelemorphia (bandicoots and bilbies).

Dromiciops gliroides (the sole extant microbiotherian) and the three genera of modern paucituberculatans (Caenolestes, Lestoros, and Rhyncholestes, all members of the family Caenolestidae) are exclusively South American in distribution (Gardner, 2008). Fossil members of both orders are known from South America (

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Review of the marsupials (Mammalia: Metatheria) from the late Paleogene (Chadronian–Arikareean: late Eocene–late Oligocene) of North America

Cited by 5 publications

References 33 publications

Marsupials (Mammalia, Metatheria) from the Brule Formation (Whitneyan, Oligocene) North Dakota

Marsupials (Mammalia, Metatheria) from the Brule Formation (Whitneyan, Oligocene) North Dakota

Taxonomy and evolutionary history of peradectids (Metatheria): New data from the early Eocene of France

Craniodental Morphology and Phylogeny of Marsupials

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