A Brief History of South American Metatherians

Goin, Francisco J.; Woodburne, Michael O.; Zimicz, Ana Natalia; Martín, Gabriel M.; Chornogubsky, Laura

doi:10.1007/978-94-017-7420-8

Cited by 99 publications

(20 citation statements)

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“…The latter age would be at least 20 Myr ago older than the earliest definitive marsupial fossils not in the Peradectidae or Herpetotheriidae (Itaboraian of Brazil, ca. 54–52 Myr ago)33, but would be congruent with recent molecular estimates34. The NA roots for multiple, successive outgroups also constrain marsupials or a recent ancestor to a NA origin and dispersal to SA during the Late Cretaceous or earliest Palaeocene—an inference corroborated by other biotic connections (multituberculates and hadrosaurines) and geological evidence of a land connection between NA and SA33.…”

Section: Discussionsupporting

confidence: 63%

“…If additional sampling of the Australidelphia leads to a revised phylogenetic placement of Dromiciops such that Mimoperadectes – Peradectes and Herpetotherium are sister taxa to rather than members of Marsupialia, then the origin of crown marsupials would be early Eocene (54–52 Myr ago)33 based on the oldest undisputed crown marsupial fossils from the Itaborai local fauna of Brazil59. In turn, the origin of stem marsupials would be constrained by the age of the ghost lineage implied by the age of the oldest member of the sister taxon, the Herpetotheriidae or Peradectidae (early Palaeocene or possibly late Campanian).…”

Section: Methodsmentioning

confidence: 99%

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A large carnivorous mammal from the Late Cretaceous and the North American origin of marsupials

et al. 2016

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Marsupial mammal relatives (stem metatherians) from the Mesozoic Era (252–66 million years ago) are mostly known from isolated teeth and fragmentary jaws. Here we report on the first near-complete skull remains of a North American Late Cretaceous metatherian, the stagodontid Didelphodon vorax. Our phylogenetic analysis indicates that marsupials or their closest relatives evolved in North America, as part of a Late Cretaceous diversification of metatherians, and later dispersed to South America. In addition to being the largest known Mesozoic therian mammal (node-based clade of eutherians and metatherians), Didelphodon vorax has a high estimated bite force and other craniomandibular and dental features that suggest it is the earliest known therian to invade a durophagous predator–scavenger niche. Our results broaden the scope of the ecomorphological diversification of Mesozoic mammals to include therian lineages that, in this case, were linked to the origin and evolution of marsupials.

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Section: Discussionsupporting

confidence: 63%

Section: Methodsmentioning

confidence: 99%

A large carnivorous mammal from the Late Cretaceous and the North American origin of marsupials

et al. 2016

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“…Notwithstanding, the more generalized peradectoid didelphimorphians are much older, with their oldest record extending far down to the Late Cretaceous of North America (Williamson, Brusatte, Carr, Weil, & Standhardt, 2012) and the early Palaeocene (ca. A review of South American metatherians, including their major Cenozoic lineages and their phylogenetical, biogeographical, palaeoenvironmental, palaeogeographical and adaptive contexts, is given in Goin, Woodburne, Zimicz, Martin, and Chornogubsky (2016). A review of South American metatherians, including their major Cenozoic lineages and their phylogenetical, biogeographical, palaeoenvironmental, palaeogeographical and adaptive contexts, is given in Goin, Woodburne, Zimicz, Martin, and Chornogubsky (2016).…”

Section: Introductionmentioning

confidence: 99%

“…In South America, the bulk of these species are distributed in Amazonian and peri-Amazonic areas, while the remaining few inhabit different biomes along the Andean Cordillera and South America's Southern Cone (Brown, 2004;Goin et al, 2016;Martin, 2010Martin, , 2011Martin, Goin, & Forasiepi, in press). In South America, the bulk of these species are distributed in Amazonian and peri-Amazonic areas, while the remaining few inhabit different biomes along the Andean Cordillera and South America's Southern Cone (Brown, 2004;Goin et al, 2016;Martin, 2010Martin, , 2011Martin, Goin, & Forasiepi, in press).…”

Section: Introductionmentioning

confidence: 99%

“…63 Ma) of South America (Muizon, 1991). A review of South American metatherians, including their major Cenozoic lineages and their phylogenetical, biogeographical, palaeoenvironmental, palaeogeographical and adaptive contexts, is given in Goin, Woodburne, Zimicz, Martin, and Chornogubsky (2016). Voss and Jansa (e.g., 2009) made a detailed account of the phylogenetic relationships and classification of living New World didelphids.…”

Section: Introductionmentioning

confidence: 99%

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Comparative histology of the digestive tract in three new world marsupials

et al. 2018

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We compare the main histological features of the digestive tract of three selected New World didelphid marsupials (Mammalia, Metatheria, Didelphimorphia, Didelphidae): the White-eared Opossum Didelphis albiventris Lund, 1840, the Short-tailed Opossum Monodelphis dimidiata Wagner, 1847, and the Patagonian Opossum Lestodelphys halli Thomas, 1921. The three species have a geographic distribution restricted to south-eastern and southern South America, and have quite distinct body masses, adaptations and life histories. Our observations include the following: (i) submucosal glands are present throughout the oesophagus of D. albiventris, only in its first third in M. dimidiata, and are lacking in L. halli; (ii) in the stomach and duodenum, the serus coat coat in D. albiventris is cuboidal (simple, squamous mesothelial layer in the other two species); (iii) the duodenum in L. halli has large folds, short crypts and Brunner's glands (the other species lack folds andBrunner's glands); (iv) the colon's mucous membrane has short, scarce villi in D. albiventris (villi absent in the remaining species). Some of the observed differences can be due to ecological adaptations, especially in the relatively large-sized, extremely omnivorous D. albiventris (e.g., colon villi). K E Y W O R D SDidelphis, digestive tract, histology, Lestodelphys, Monodelphis

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The embryo of the silky shrew opossum, Caenolestes fuliginosus (Tomes, 1863): First description of the embryo of Paucituberculata

González

Soria‐Escobar

Rojas‐Díaz³

et al. 2020

Journal of Morphology

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The development of caenolestid marsupials (order Paucituberculata) is virtually unknown. We provide here the first description of Caenolestes fuliginosus embryos collected in the Colombian Central Andes. Our sample of four embryos comes from a single female caught during a fieldtrip at Río Blanco (Manizales, Caldas), in 2014. The sample was processed for macroscopic description using a Standard Event System and for histological descriptions (sectioning and staining). The grade of development of the lumbar flexure and coelomic closure differed between embryos, two of them being more advanced than the others (similar to McCrady's stages 30 and 29, respectively). The pericardial and peritoneal cavities were present, the hepatic anlage was organized in hepatic cords, the heart was in its final position, and the mesonephros was functional. Compared to other Neotropical marsupials, an early appearance of the frontonasal‐maxillary fusion and the cervical growth (thickness) was observed; however, absorption of the pharyngeal arches into the body and lung development was delayed. Besides these differences, embryos were similar to equivalent stages in Didelphis virginiana and Monodelphis domestica. Previous proposals of litter size of four for C. fuliginosus are supported.

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A Brief History of South American Metatherians

Cited by 99 publications

References 0 publications

A large carnivorous mammal from the Late Cretaceous and the North American origin of marsupials

A large carnivorous mammal from the Late Cretaceous and the North American origin of marsupials

Comparative histology of the digestive tract in three new world marsupials

The embryo of the silky shrew opossum, Caenolestes fuliginosus (Tomes, 1863): First description of the embryo of Paucituberculata

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