An intertropical opossum (Mammalia, Marsupialia, Didelphidae) from the late Middle–Late Pleistocene of austral South America

Vezzosi, Raúl Ignacio; Brunetto, Ernesto; Flores, David A.

doi:10.1080/08912963.2017.1354181

Cited by 7 publications

(9 citation statements)

References 45 publications

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“…; Vezzosi et al . ). This fauna clearly suggests the presence of heterogeneous complex environments with semiaquatic systems and plains with wooded grasslands (i.e.…”

Section: Discussionmentioning

confidence: 97%

“…These deposits can be interpreted as a sequence consisting of at least two fluvial cycles and are very fossiliferous (Vezzosi et al . , ). The fossil specifically comes from the basal fluvial deposits informally referred to as the Esperanza Lithostratigraphic Unit (ELU; Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…; Vezzosi et al . ; Vezzosi & Kerber ). Along the cut banks of the Cululú Stream and northern Salado River crop out the Palo Negro, Cululú, and Tezanos Pinto formations, as well as other fluvial lithostratigraphical units under study (Iriondo , ; Brunetto et al .…”

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confidence: 99%

“…Several fossil remains were recovered from the lower northern Salado River catchment where the Late Pleistocene unit denominated the Esperanza Lithostratigraphic Unit (ELU) crops out (Vezzosi et al . , ).…”

mentioning

confidence: 99%

“…Timb ues, Carcarañ a, and Tezanos Pinto Formations; Iriondo 2010; Iriondo & Kr€ ohling 2009;Brunetto et al 2017). Some of these sequences are fossiliferouswith both aquatic and continental vertebrates (Frenguelli 1920(Frenguelli , 1932Castellanos 1922Castellanos , 1924Vezzosi 2016;Vallone et al 2017;Vezzosi et al 2017;Vezzosi & Kerber 2018). Along the cut banks of the Culul u Stream and northern Salado River crop out the Palo Negro, Culul u, and Tezanos Pinto formations, as well as other fluvial lithostratigraphical units under study (Iriondo 1983(Iriondo , 2010Brunetto et al 2010;Kr€ ohling & Brunetto 2013;Vezzosi 2015).…”

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confidence: 99%

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Nothrotheriopssp. (Mammalia, Xenarthra) from the Late Pleistocene of Argentina: implications for the dispersion of ground sloths during the Great American Biotic Interchange

Brandoni

Vezzosi

2019

Boreas

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The aim of this contribution is to describe a femur (MCRS 199) assigned to Nothrotheriops sp. from the Late Pleistocene of Santa Fe Province (Argentina), and discuss the implications of this find in the context of the dispersal of ground sloths during the Great American Biotic Interchange. The specimen MCRS 199 is smaller than the femora referred to the North American species Nothrotheriops texanus and Nothrotheriops shastensis but shares several features with these species: (i) shape and position of the greater trochanter, (ii) development of the lesser trochanter, (iii) presence of connection between the third trochanter and the ectepicondyle, (iv) distal third of the femur wider, with ML/DW index of 1.93, and (v) location and relationship of the distal condyles. These similarities allow us to assign MCRS 199 to Nothrotheriops sp. The record of Nothrotheriops sp. from Santa Fe Province chronologically coincides with the earliest records of Nothrotheriops shastensis suggesting a broad geographical distribution of Nothrotheriops during the Late Pleistocene, ranging from 33–36°N (e.g. states of California and Arizona, USA) to 31°S (northern Salado River, Santa Fe Province, Argentina). Thus, Nothrotheriops have dispersed from North America (where Nothrotheriops has early records, Calabrian–Middle Pleistocene) to South America where localities bearing Nothrotheriops are Late Pleistocene in age. In addition, once in South America and probably during the Middle Pleistocene, Nothrotheriops probably gave rise to its sister taxon, Nothrotherium, with records from the Middle Pleistocene (e.g. 223 ka BP, northeastern Brazil) to the Late Pleistocene (e.g. 15 ka BP).

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“…; Vezzosi et al . ). This fauna clearly suggests the presence of heterogeneous complex environments with semiaquatic systems and plains with wooded grasslands (i.e.…”

Section: Discussionmentioning

confidence: 97%

Section: Geological Settingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Nothrotheriopssp. (Mammalia, Xenarthra) from the Late Pleistocene of Argentina: implications for the dispersion of ground sloths during the Great American Biotic Interchange

Brandoni

Vezzosi

2019

Boreas

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Memories of the blows: severe soft-tissue injuries in caudal vertebrae of Panochthus Burmeister (Xenarthra, Glyptodontidae)

Luna,

Barasoain,

Vezzosi

et al. 2024

J Mammal Evol

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New remains of Nothrotheriinae (Mammalia, Xenarthra) from Late Pleistocene fluvial deposits of Northern Pampa (Santa Fe Province, Argentina)

Vezzosi

Brandoni

Brunetto

et al. 2019

Journal of South American Earth Sciences

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In this contribution the record of a Nothrotheriinae (Xenarthra, Tardigrada) ground sloth is reported from the Late Pleistocene of the Northern Pampa of Santa Fe Province, Argentina. The stratigraphic unit where the fossil was collected corresponds to fluvial-palustrine sediments of the Timbúes Formation, outcropping along the Carcarañá River valley. The relative stratigraphic position of this lithostratigraphic unit, observed in several sections mainly on the Paraná River cliffs near Carcarañá River distal area, suggests that it was deposited during the Last Interglacial Stage.The specimen (MPAHND-135), assigned to Nothrotherium cf. torresi, is represented by the proximal two-thirds of a left femur that shows a prominent lesser trochanter and no connection between the third trochanter and the ectepicondyle. The presence of Nothrotherium cf. torresi in sediments related to humid conditions supports the idea that Nothrotheriinae had great ecological tolerance and was capable of inhabiting climates ranging from cold and arid, as was previously proposed, to warm and humid.

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An intertropical opossum (Mammalia, Marsupialia, Didelphidae) from the late Middle–Late Pleistocene of austral South America

Cited by 7 publications

References 45 publications

Nothrotheriopssp. (Mammalia, Xenarthra) from the Late Pleistocene of Argentina: implications for the dispersion of ground sloths during the Great American Biotic Interchange

Nothrotheriopssp. (Mammalia, Xenarthra) from the Late Pleistocene of Argentina: implications for the dispersion of ground sloths during the Great American Biotic Interchange

Memories of the blows: severe soft-tissue injuries in caudal vertebrae of Panochthus Burmeister (Xenarthra, Glyptodontidae)

New remains of Nothrotheriinae (Mammalia, Xenarthra) from Late Pleistocene fluvial deposits of Northern Pampa (Santa Fe Province, Argentina)

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