Article
Geosciences, Multidisciplinary
Daniel Barasoain, Laureano R. Gonzalez Ruiz, Diego Brandoni
Summary: New remains of Dasypodidae have been discovered in the Neogene Salicas Formation in La Rioja Province, Argentina, indicating a Late Miocene age and adding to the diversity of this formation. The association of dasypodids suggests affinities with Late Miocene localities in northwestern Argentina, with some species being endemic to the region. These differences may be related to tectonic and paleoenvironmental factors.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Paleontology
Jose L. Roman-Carrion, Richard Madden, Angel R. Mino-Boilini, Alfredo E. Zurita
Summary: Xenarthra, an important endemic clade in South America during the Cenozoic, has been found in new fossil discoveries from southern Ecuador. Comparative studies reveal morphological differences with other Miocene specimens from different regions, suggesting the possibility of new taxa and indicating isolation of these putative endemic paleofauna in southern South America.
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2021)
Article
Paleontology
Diego Brandoni, Daniel Barasoain, Laureano R. GONZaLEZ Ruiz
Summary: This paper describes fossil remains of different species of Dasypodidae from the Toro Negro Formation in Argentina. These fossils include species that have not been previously recorded in this formation, suggesting an increase in mammal diversity. These findings also support the proposed ages for the lower Member of the Toro Negro Formation as Late Miocene-Early Pliocene.
COMPTES RENDUS PALEVOL
(2023)
Article
Geosciences, Multidisciplinary
Matthias Kranner, Mathias Harzhauser, Oleg Mandic, Philipp Strauss, Wolfgang Siedl, Werner E. Piller
Summary: The Vienna Basin is one of the largest onshore oil and gas fields in Europe, consisting of several horst and graben structures. Analysis of water depth evolution along a NE-SW transect indicates dramatic changes over time, coinciding with shifts in prevailing tectonic regimes.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
D. Pacheco, E. D. Mercerat, F. Courboulex, L. F. Bonilla, A. Laurendeau, A. Alvarado
Summary: The capital of Ecuador, Quito, with over 2.5 million inhabitants, faces a high seismic hazard due to its proximity to the Pacific subduction zone and active crustal faults. Through the study of Quito's seismic response and geological structure, differences in the basin structure between the central-northern and southern parts were found to explain the spatial distribution of low-frequency seismic amplifications observed during the Mw 7.8 Pedernales earthquake in April 2016.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
D. Pacheco, E. D. Mercerat, F. Courboulex, L. F. Bonilla, A. Laurendeau, A. Alvarado
Summary: Quito, the capital of Ecuador, is at high seismic risk due to its proximity to seismic zones. A study conducted in the city investigated the seismic response of an intermontane basin. Differences in the basin's structure between its northern and southern parts were found to explain the observed low-frequency seismic amplification during a previous earthquake.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Geography, Physical
Steffen Kiel, Daniel Birgel, Yang Lu, Denise Wienholz, Joern Peckmann
Summary: A mass occurrence of the thyasirid bivalve Thyasira montanita in a limestone bed in Punta Montanita, Ecuador, is identified as an ancient methane-seep deposit with typical carbonate phases and microfabrics. The delta C-13 values and biomarkers suggest a biogenic methane source and high seepage rates. Crustacean fragments were found in tubular fossils within the deposit, which is the first Cenozoic example of a seep deposit with mass occurrences of thyasirid bivalves, indicating an open shelf depositional environment.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Environmental Sciences
Yuanyuan Sun, Yu Liang, Hu Liu, Jun Liu, Junliang Ji, Xue Ke, Xiaobo Liu, Yuxin He, Huanye Wang, Bin Zhang, Yongsu Zhang, Guangsheng Zhuang, Junling Pei, Yongxiang Li, Cheng Quan, Jianxing Li, Jonathan C. Aitchison, Weiguo Liu, Zhonghui Liu
Summary: Unusual geochemical indicators of marine signatures in the Cenozoic terrestrial strata of the Qaidam Basin suggest a mid-Miocene basin altitude close to sea level, providing evidence for the outward growth of the Tibetan Plateau and its subsequent uplift.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Geography, Physical
Zhu-Ding Qiu, Lu Li
Summary: This paper presents the Miocene squirrels of the Linxia Basin in Gansu Province, which reflects a relatively dry climate and open shrub-steppe environment. The analysis suggests that northern China represents a single biotic province with uniform paleoenvironment, while southern China has a humid forest biotope. The differences in squirrel distribution indicate distinct provinciality and latitudinal ecological variation in China during the Miocene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
C. Peirce, J. C. Tedd, R. W. Hobbs
Summary: This study investigates the structure and dynamics of the Ecuador Fracture Zone using multiple geophysical data types. Gravity modelling reveals a low-density crust beneath the fracture zone and an anomalously low-density region in the uppermost mantle. Normal faults bound the median ridges within the fracture zone, offsetting the seabed and documenting multiple phases of relative uplift. The study also observes active extensional faulting and serpentinization in the Costa Rica Rift crust. Contrary to the assumption that fracture zones are tectonically inactive, the Ecuador Fracture Zone provides evidence of extension, ongoing serpentinization, and relative uplift.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Forestry
Yul Altolaguirre, Jose M. Postigo-Mijarra, Manuel Casas-Gallego, Rafael Moreno-Dominguez, Eduardo Barron
Summary: The Late Miocene palaeofloras of the La Cerdanya Basin provide valuable insights into the vegetation of the Iberian Peninsula during a time of climate change. Previous studies have shown a diverse mix of evergreen and deciduous trees and conifers, but the spatial distribution of these forest types was unknown. In this study, the biomization method was used to map the different late Miocene vegetation types, revealing shifts in vegetation belts in response to climate variations and mountain uplift.
Article
Geography, Physical
Yu Liang, Bin Zhang, Yongshu Zhang, Yancheng Zhang, Jun Wang, Zhonghui Liu
Summary: Research indicates that the megalake in the Qaidam Basin on the northeast Tibetan Plateau experienced significant water level fluctuations during the mid- and late Miocene, controlled by global climatic conditions. Overall, the lake shrank under relatively cool conditions and expanded under relatively warm conditions, gradually dwindling over time.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geography, Physical
Lu Sun, Chenglong Deng, Tao Deng, Yanfen Kong, Bailing Wu, Suzhen Liu, Qian Li, Geng Liu
Summary: The Cenozoic biochronology framework for northern China has relied on few vertebrate fossil localities with unverified age constraints. The Linxia Basin in northwestern China has a significant amount of vertebrate fossils of ages ranging from the Late Oligocene to Early Pleistocene, and its dating has been improved using a revised magneto-stratigraphy and biochronological constraints. The newly estimated age for the paracerathere fauna supports a proposal for relocating the basal boundary of the Chinese Tabenbulukian Land Mammal Stage/Age.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
Zhixiang Wang, Ze Zhang, Chunju Huang, Jiangming Shen, Yu Sui, Zhiqi Qian
Summary: The study presents evidence of orbital-scale variability of the East Asian summer monsoon in the early Miocene period, with dominant cyclical patterns of approximately 100 kyr eccentricity. This variability is linked to Antarctic ice sheet modulations and changes in weathering intensity in the Lanzhou Basin, possibly influenced by changes in westerly moisture due to orogenic barriers and uplift of NE Tibet during the late Oligocene-early Miocene period.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geography, Physical
Arthur Borzi, Mathias Harzhauser, Werner E. Piller, Philipp Strauss, Wolfgang Siedl, Rudolf Dellmour
Summary: This study provides a detailed description of the depositional architecture of five individual lobes of the Paleo-Danube delta in the Austrian part of the central Vienna Basin, highlighting the evolution and movement of the delta system in relation to regional fault systems.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geography, Physical
E. Soibelzon, L. S. Avilla, M. Castro
QUATERNARY INTERNATIONAL
(2015)
Article
Anatomy & Morphology
C. M. Krmpotic, M. R. Ciancio, A. A. Carlini, M. C. Castro, A. C. Scarano, C. G. Barbeito
Article
Zoology
Mariela C. Castro, Martin R. Ciancio, Victor Pacheco, Rodolfo M. Salas-Gismondi, J. Enrique Bostelmann, Alfredo A. Carlini
Article
Biodiversity Conservation
Xiao Feng, Mariela C. Castro, Evan Linde, Monica Papes
TROPICAL CONSERVATION SCIENCE
(2017)
Article
Biodiversity Conservation
Xiao Feng, Mariela C. Castro, Karen McBee, Monica Papes
TROPICAL CONSERVATION SCIENCE
(2017)
Article
Multidisciplinary Sciences
Mariela C. Castro, Francisco J. Goin, Edgardo Ortiz-Jaureguizar, E. Carolina Vieytes, Kaori Tsukui, Jahandar Ramezani, Alessandro Batezelli, Julio C. A. Marsola, Max C. Langer
ROYAL SOCIETY OPEN SCIENCE
(2018)
Article
Multidisciplinary Sciences
Mariela C. Castro, Alfredo A. Carlini, Rodolfo Sanchez, Marcelo R. Sanchez-Villagra
NATURWISSENSCHAFTEN
(2014)
Article
Geosciences, Multidisciplinary
Estevan Eltink, Mariela Castro, Felipe Chinaglia Montefeltro, Mario Andre Trindade Dantas, Carolina Saldanha Scherer, Paulo Victor de Oliveira, Max Cardoso Langer
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Review
Paleontology
Paulo Ricardo Mendonca Lopes, Mariela Cordeiro de Castro, Edson Guilherme, Annie Schmaltz Hsiou
REVISTA BRASILEIRA DE PALEONTOLOGIA
(2019)
Article
Zoology
Martin R. Ciancio, Emma C. Vieytes, Mariela C. Castro, Alfredo A. Carlini
Summary: The study analyzed the enamel microstructure in four Dasypus species, revealing variations in enamel morphology among different species and a trend of gradual reduction of enamel during evolution.
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2021)
Review
Evolutionary Biology
Mariela C. Castro, Murilo J. Dahur, Gabriel S. Ferreira
Summary: Didelphidae is the largest New World radiation of marsupials, mainly inhabiting tropical and subtropical forests. The study highlights the significance of the Amazon region in the early diversification process, with cladogenesis in other areas starting in the late Miocene and only a few areas being colonized in the Quaternary period.
JOURNAL OF MAMMALIAN EVOLUTION
(2021)
Article
Anatomy & Morphology
Juan V. V. Ruiz, Gabriel S. S. Ferreira, Stephan Lautenschlager, Mariela C. C. de Castro, Felipe C. C. Montefeltro
Summary: This study investigated the craniomandibular functional morphology of the bush dog and compared it to the grey wolf and grey fox. The results showed that the bush dog's biting behavior is more similar to the wolf's, suggesting a convergent evolution in their craniomandibular functional morphology. The bush dog has relatively strong bite force and is specialized in hunting prey similar in size to itself.
JOURNAL OF ANATOMY
(2023)
Article
Evolutionary Biology
Juan S. Salgado-Ahumada, Marcos D. Ercoli, Alicia Alvarez, Mariela C. Castro, Martin R. Ciancio
Summary: Cingulata (Mammalia, Xenarthra) is a conspicuous clade in the Cenozoic fossil record of South America, and geometric morphometric analysis is applied to assess shape variation of Dasypodini osteoderms in order to identify fragmentary fossil remains. The results confirm the taxonomic assignments of fossil Dasypodini osteoderms and extend the biochron of Dasypus by at least 3 million years.
JOURNAL OF MAMMALIAN EVOLUTION
(2023)
Article
Biology
Thais R. Pansani, Briana Pobiner, Pierre Gueriau, Mathieu Thoury, Paul Tafforeau, Emmanuel Baranger, Agueda V. Vialou, Denis Vialou, Cormac McSparron, Mariela C. de Castro, Mario A. T. Dantas, Loic Bertrand, Mirian L. A. F. Pacheco
Summary: Using various methods including optical microscopy, non-destructive scanning electron microscopy, UV/visible photoluminescence, and synchrotron-based microtomography, researchers have found that three giant sloth osteoderms discovered at the Santa Elina site in Central Brazil were intentionally modified by humans. This study provides further evidence for the coexistence of humans and megafauna during the last glacial maximum and demonstrates human manufacturing of personal artifacts on ground sloth bones in Central Brazil.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Multidisciplinary Sciences
Lilian P. Bergqvist, Paulo Victor Luiz G. C. Pereira, Alessandra S. Machado, Mariela C. De Castro, Luiza B. Melki, Ricardo T. Lopes
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2019)