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Stubbins B, Leier AL, Barbeau DL, Pullen A, Abell JT, Nie J, Zárate MA, Fidler MK. Global climate forcing on late Miocene establishment of the Pampean aeolian system in South America. Nat Commun 2023; 14:6899. [PMID: 37899425 PMCID: PMC10613622 DOI: 10.1038/s41467-023-42537-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 10/12/2023] [Indexed: 10/31/2023] Open
Abstract
Wind-blown dust from southern South America links the terrestrial, marine, atmospheric, and biological components of Earth's climate system. The Pampas of central Argentina (~33°-39° S) contain a Miocene to Holocene aeolian record that spans an important interval of global cooling. Upper Miocene sediment provenance based on n = 3299 detrital-zircon U-Pb ages is consistent with the provenance of Pleistocene-Holocene deposits, indicating the Pampas are the site of a long-lived fluvial-aeolian system that has been operating since the late Miocene. Here, we show the establishment of aeolian sedimentation in the Pampas coincided with late Miocene cooling. These findings, combined with those from the Chinese Loess Plateau (~33°-39° N) underscore: (1) the role of fluvial transport in the development and maintenance of temporally persistent mid-latitude loess provinces; and (2) a global-climate forcing mechanism behind the establishment of large mid-latitude loess provinces during the late Miocene.
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Affiliation(s)
- Blake Stubbins
- School of the Earth, Ocean and Environment, University of South Carolina, Columbia, SC, 29208, USA
| | - Andrew L Leier
- School of the Earth, Ocean and Environment, University of South Carolina, Columbia, SC, 29208, USA
| | - David L Barbeau
- School of the Earth, Ocean and Environment, University of South Carolina, Columbia, SC, 29208, USA
| | - Alex Pullen
- Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC, 29634, USA.
| | - Jordan T Abell
- Department of Geosciences, University of Arizona, Tucson, AZ, 85721, USA
- Department of Earth and Environmental Sciences, Lehigh University, Pennsylvania, PA, 18015, USA
| | - Junsheng Nie
- Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Marcelo A Zárate
- Instituto de Ciencias de la Tierra y Ambientales de La Pampa, CONICET Universidad Nacional de La Pampa, La Pampa, Argentina
| | - Mary Kate Fidler
- Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC, 29634, USA
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Saarinen J, Lister AM. Fluctuating climate and dietary innovation drove ratcheted evolution of proboscidean dental traits. Nat Ecol Evol 2023; 7:1490-1502. [PMID: 37580434 PMCID: PMC10482678 DOI: 10.1038/s41559-023-02151-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 07/05/2023] [Indexed: 08/16/2023]
Abstract
Identification of the selective forces that shaped adaptive phenotypes generally relies on current habitat and function, but these may differ from the context in which adaptations arose. Moreover, the fixation of adaptive change in a fluctuating environment and the mechanisms of long-term trends are still poorly understood, as is the role of behaviour in triggering these processes. Time series of fossils can provide evidence on these questions, but examples of individual lineages with adequate fossil and proxy data over extended periods are rare. Here, we present new data on proboscidean dental evolution in East Africa over the past 26 million years, tracking temporal patterns of morphological change in relation to proxy evidence of diet, vegetation and climate (aridity). We show that behavioural experimentation in diet is correlated with environmental context, and that major adaptive change in dental traits followed the changes in diet and environment but only after acquisition of functional innovations in the masticatory system. We partition traits by selective agent, showing that the acquisition of high, multiridged molars was primarily a response to an increase in open, arid environments with high dust accumulation, whereas enamel folding was more associated with the amount of grass in the diet. We further show that long-term trends in these features proceeded in a ratchet-like mode, alternating between directional change at times of high selective pressure and stasis when the selective regime reversed. This provides an explanation for morphology adapted to more extreme conditions than current usage (Liem's Paradox). Our study illustrates how, in fossil series with adequate stratigraphic control and proxy data, environmental and behavioural factors can be mapped on to time series of morphological change, illuminating the mode of acquisition of an adaptive complex.
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Affiliation(s)
- Juha Saarinen
- Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland.
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3
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The multicausal twilight of South American native mammalian predators (Metatheria, Sparassodonta). Sci Rep 2022; 12:1224. [PMID: 35075186 PMCID: PMC8786871 DOI: 10.1038/s41598-022-05266-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/23/2021] [Indexed: 11/08/2022] Open
Abstract
Sparassodonts were the apex mammalian predators of South America throughout most of the Cenozoic, diversifying into a wide array of niches including fox-like and even saber-toothed forms. Their extinction is still controversial, with different authors suggesting competition with other predators (placental carnivorans, terror birds, and carnivorous opossums), extinction of prey, and climate change as causal explanations. Here, we analyse these hypotheses using a novel approach implicating Bayesian analyses. We find that speciation and extinction rates of sparassodonts can be correlated with (i) intrinsic biotic factors such as changes in body mass and diversity of sparassodonts, (ii) extrinsic biotic factors such as potential prey diversity, and iii) extrinsic abiotic factors like the atmospheric CO2, sea level, temperature, and uplift of the Andes. Thus, sparassodonts are a good example of a multilevel mixed model of evolution, where various factors drove the evolutionary history of this clade in a pluralistic way. There is no evidence for competition between Sparassodonta and others predators, and the effect of competition in the face of extinctions of fossil species should be tested and not assumed. Furthermore, we propose a novel approach for evaluating the fossil record when performing macroevolutionary analyses.
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Prevosti FJ, Romano CO, Forasiepi AM, Hemming S, Bonini R, Candela AM, Cerdeño E, Madozzo Jaén MC, Ortiz PE, Pujos F, Rasia L, Schmidt GI, Taglioretti M, MacPhee RDE, Pardiñas UFJ. New radiometric 40Ar- 39Ar dates and faunistic analyses refine evolutionary dynamics of Neogene vertebrate assemblages in southern South America. Sci Rep 2021; 11:9830. [PMID: 33972595 PMCID: PMC8110973 DOI: 10.1038/s41598-021-89135-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/21/2021] [Indexed: 11/20/2022] Open
Abstract
The vertebrate fossil record of the Pampean Region of Argentina occupies an important place in South American vertebrate paleontology. An abundance of localities has long been the main basis for constructing the chronostratigraphical/geochronological scale for the late Neogene-Quaternary of South America, as well as for understanding major patterns of vertebrate evolution, including the Great American Biotic Interchange. However, few independently-derived dates are available for constraining this record. In this contribution, we present new 40Ar/39Ar dates on escorias (likely the product of meteoric impacts) from the Argentinean Atlantic coast and statistically-based biochronological analyses that help to calibrate Late Miocene-Pliocene Pampean faunal successions. For the type areas of the Montehermosan and Chapadmalalan Ages/Stages, our results delimit their age ranges to 4.7-3.7 Ma and ca. 3.74-3.04 Ma, respectively. Additionally, from Buenos Aires Province, dates of 5.17 Ma and 4.33 Ma were recovered for "Huayquerian" and Montehermosan faunas. This information helps to better calibrate important first appearances of allochthonous taxa in South America, including one of the oldest records for procyonids (7.24-5.95 Ma), cricetids (6.95-5.46 Ma), and tayassuids (> 3.74 Ma, oldest high-confidence record). These results also constrain to ca. 3 Ma the last appearances of the autochthonous sparassodonts, as well as terror birds of large/middle body size in South America. South American faunal turnover during the late Neogene, including Late Pliocene extinctions, is interpreted as a consequence of knock-on effects from global climatic changes and initiation of the icehouse climate regime.
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Affiliation(s)
- Francisco J Prevosti
- Museo de Ciencias Antropológicas y Naturales, Universidad Nacional de La Rioja (UNLaR), Av. Luis M. de La Fuente S/N, 5300, La Rioja, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - Cristo O Romano
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Paleobiología y Paleoecología, IANIGLA, CCT-CONICET-Mendoza, 5500, Mendoza, Argentina
| | - Analía M Forasiepi
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Paleobiología y Paleoecología, IANIGLA, CCT-CONICET-Mendoza, 5500, Mendoza, Argentina
| | - Sidney Hemming
- Lamont-Doherty Earth Observatory, University of Columbia-Earth Institute, Palisades, NY, 10964-8000, USA
| | - Ricardo Bonini
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Investigaciones Arqueológicas y Paleontológicas del Cuaternario Pampeano (INCUAPA), CONICET, 7400, Olavarría, Buenos Aires, Argentina
| | - Adriana M Candela
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- División Paleontología Vertebrados, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, 1900, La Plata, Buenos Aires, Argentina
| | - Esperanza Cerdeño
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Paleobiología y Paleoecología, IANIGLA, CCT-CONICET-Mendoza, 5500, Mendoza, Argentina
| | - M Carolina Madozzo Jaén
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- INSUGEO-Facultad de Ciencias Naturales E IML, Universidad Nacional de Tucumán, 4000, San Miguel de Tucumán, Tucumán, Argentina
- Museo Paleontológico Egidio Feruglio, 9100, Trelew, Chubut, Argentina
| | - Pablo E Ortiz
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- INSUGEO-Facultad de Ciencias Naturales E IML, Universidad Nacional de Tucumán, 4000, San Miguel de Tucumán, Tucumán, Argentina
| | - François Pujos
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Paleobiología y Paleoecología, IANIGLA, CCT-CONICET-Mendoza, 5500, Mendoza, Argentina
| | - Luciano Rasia
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- División Paleontología Vertebrados, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, 1900, La Plata, Buenos Aires, Argentina
| | - Gabriela I Schmidt
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Laboratorio de Paleontología de Vertebrados, Centro de Investigación Científica y de Transferencia Tecnológica a La Producción (CONICET-Prov. ER-UADER), 3105, Diamante, Entre Ríos, Argentina
| | - Matias Taglioretti
- Museo Municipal de Ciencias Naturales "Lorenzo Scaglia", 7600, Mar del Plata, Buenos Aires, Argentina
- Observatorio Patrimonio Arqueológico y Paleontológico (OPAP), Litoral Atlántico Norte (LAN), 7600, Mar del Plata, Buenos Aires, Argentina
- Geología Costera y Paleoecología-IGCYC FCEYN/CIC-Universidad Nacional de Mar del Plata, 7600, Mar del Plata, Buenos Aires, Argentina
| | - Ross D E MacPhee
- Department of Mammalogy, American Museum of Natural History, New York, NY, 10024-5102, USA
| | - Ulyses F J Pardiñas
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Diversidad y Evolución Austral (IDEAUS), CENPAT, CONICET, 9120, Puerto Madryn, Chubut, Argentina
- Associate Researcher of the Instituto Nacional de Biodiversidad (INABIO), Quito, Ecuador
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Tierney JE, Poulsen CJ, Montañez IP, Bhattacharya T, Feng R, Ford HL, Hönisch B, Inglis GN, Petersen SV, Sagoo N, Tabor CR, Thirumalai K, Zhu J, Burls NJ, Foster GL, Goddéris Y, Huber BT, Ivany LC, Kirtland Turner S, Lunt DJ, McElwain JC, Mills BJW, Otto-Bliesner BL, Ridgwell A, Zhang YG. Past climates inform our future. Science 2020; 370:370/6517/eaay3701. [DOI: 10.1126/science.aay3701] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
| | - Christopher J. Poulsen
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Isabel P. Montañez
- Department of Earth and Planetary Sciences, University of California, Davis, Davis, CA, USA
| | - Tripti Bhattacharya
- Department of Earth and Environmental Sciences, Syracuse University, Syracuse, NY, USA
| | - Ran Feng
- Department of Geosciences, University of Connecticut, Storrs, CT, USA
| | - Heather L. Ford
- School of Geography, Queen Mary University of London, London, UK
| | - Bärbel Hönisch
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
| | - Gordon N. Inglis
- Department of Earth and Environmental Sciences, Columbia University, Palisades, NY, USA
| | - Sierra V. Petersen
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Navjit Sagoo
- Department of Meteorology, University of Stockholm, Stockholm, Sweden
| | - Clay R. Tabor
- Department of Geosciences, University of Connecticut, Storrs, CT, USA
| | | | - Jiang Zhu
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
| | - Natalie J. Burls
- Department of Atmospheric, Oceanic, and Earth Sciences, George Mason University, Fairfax, VA, USA
| | - Gavin L. Foster
- Department of Earth and Environmental Sciences, Columbia University, Palisades, NY, USA
| | - Yves Goddéris
- Centre National de la Recherche Scientifique, Géosciences Environnement Toulouse, Toulouse, France
| | - Brian T. Huber
- Department of Paleobiology, Smithsonian National Museum of Natural History, Washington, DC, USA
| | - Linda C. Ivany
- Department of Earth and Environmental Sciences, Syracuse University, Syracuse, NY, USA
| | | | - Daniel J. Lunt
- School of Geographical Sciences, University of Bristol, Bristol, UK
| | | | | | | | - Andy Ridgwell
- Department of Earth Science, University of California, Riverside, Riverside, CA, USA
| | - Yi Ge Zhang
- Department of Oceanography, Texas A&M University, College Station, TX, USA
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Biogeography, phylogenetic relationships and morphological analyses of the South American genus Mutisia L.f. (Asteraceae) shows early connections of two disjunct biodiversity hotspots. ORG DIVERS EVOL 2020. [DOI: 10.1007/s13127-020-00454-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Richardson BJ. Evolutionary biogeography of Australian jumping spider genera (Araneae : Salticidae). AUST J ZOOL 2019. [DOI: 10.1071/zo20023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Phylogenetic relationships and estimated dates of origin, plus distributional, ecological and morphological data for salticid genera were used to examine a series of hypotheses related to the evolution of the Australian salticid fauna. Though independent, the time patterns of evolution of genera in Australia and South America were similar, while that for Northern Hemisphere taxa differed. In each case the production of new genera occurred during the warmer parts of the mid Tertiary but not during cooler and drier times. Asian elements entered Australia as early as 31 million years ago, long before the collision of the Australasian and Asian continental plates. Endemic and derivatives of Asian genera were similarly distributed across Australian biomes. However, arriving taxa were more successful when conditions matched their mesic origins (tropical), but less so when different (temperate). While endemic genera often extended their ranges into drier environments by increasing the number of species, recent arrivals did so by extending the range of individual species. Maximum Parsimony analyses of a range of presumed adaptive, morphological and ecological characters showed these did not reflect genus-level processes; however, the analysis did show all endemic genera had mesic origins.
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