Article
Geology
Libby R. W. Ives, John L. Isbell
Summary: This study reexamines the Late Paleozoic glaciation conditions in the Tasmanian Basin through facies analysis and sequence stratigraphy, providing a detailed understanding of the glaciogenic sedimentary systems. The findings enhance our knowledge of the global climate system during the Late Paleozoic Ice Age.
SEDIMENTARY GEOLOGY
(2023)
Article
Plant Sciences
S. Oplustil, Z. Simunek, V. Mencl
Summary: This study evaluates the fossil record of the Krkonoše-Piedmont Basin and finds that species richness during different time intervals is influenced by taphonomic and sampling biases. Coal-bearing strata and grey lacustrine intervals have high species richness in wetland habitats, while red beds have fewer species. It is suggested that wetland communities almost disappeared during the deposition of red beds, resulting in gymnosperm-dominated forests in the basin. Climatically-driven oscillations in vegetation patterns occur on scales of hundreds of thousands to a million years and are superimposed on a long-term drying trend.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Geology
Sebastian Voigt, Karl Oliver, Bryan J. Small
Summary: The Maroon Formation in northwest Colorado contains ice crystal marks that resemble crystal casts, providing key clues for understanding similar structures in sedimentary rocks. These marks suggest that lower elevation equatorial areas were affected by night frost during the Late Paleozoic Ice Age, potentially stimulating research on evolutionary adaptations of early terrestrial biota to significant air temperature fluctuations.
Article
Geosciences, Multidisciplinary
Marie Olivier, Sylvie Bourquin, Guy Desaubliaux, Celine Ducassou, Camille Rossignol, Gautier Daniau, Dan Chaney
Summary: This study investigates the evolution of depositional environments in the Late Pennsylvanian-early Permian of the Paradox Basin in Utah, USA, through detailed sedimentological and high-resolution sequence stratigraphic analyses. The study aims to define a model of landscape evolution, discuss the stratigraphic model, and evaluate the significance of cyclicity in the paleoclimatic context. The findings reveal complex interactions between aeolian, fluvial, and marine environments in the Permian succession of the Paradox Basin, and highlight the importance of high-resolution stratigraphic analyses in understanding cyclicity in the Late Paleozoic Ice Age paleoclimatic context.
Article
Geosciences, Multidisciplinary
Sebastian Voigt, Thomas Schindler, Marion Tichomirowa, Alexandra Kaessner, Joerg W. Schneider, Ulf Linnemann
Summary: The Saar-Nahe Basin is one of the largest intra-continental basins of the European Variscides, filled with up to 6500 m thick volcano-sedimentary rocks representing 40 million years of basin evolution. The first high-precision U-Pb CA-ID-TIMS age of a previously undated ash tuff layer of the Altenglan Formation yielded a result of 298.7 +/- 0.4 Ma. Comparative analyses of zircons from the same layer confirmed this age, supporting a Pennsylvanian-Permian boundary within the Altenglan Formation and suggesting an earliest Asselian age for a globally important fossil tetrapod lagerstaette.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2022)
Review
Forestry
Sonia Maria Rodriguez, Ricardo Javier Ordas, Jose Manuel Alvarez
Summary: The peculiar characteristics of conifers pose challenges to their study, but they are of great importance from various perspectives. However, the study of conifers faces scientific, methodological, cultural, economic, social, and legal challenges. This paper proposes an approach to address these challenges and advocates for a multidisciplinary scientific perspective to fully understand conifers.
Article
Geosciences, Multidisciplinary
Luca Giacomo Costamagna
Summary: This study presents the field investigations on the sedimentary evolution of the Mulargia-Escalaplano late- to post-Variscan basin in Sardinia, which provides detailed information on the relationships between sedimentary cycles from Late Pennsylvanian to Middle Triassic. The findings reveal the interplay between tectonics and sedimentation, and suggest that the sedimentary response in the basin matches the evolution of the southern Variscan chain branch. The basin preserves continental deposits organized in cycles, with weak unconformities and influenced by drying climates, indicating a progressive widening of the basin and migration of the depocentre to the southeast.
GEOLOGICAL MAGAZINE
(2022)
Article
Geology
Bernard Mottequin, Ninon Robin
Summary: A large collection of arthropod fossils, including insects and crustaceans, collected by French paleoentomologist Mathieu in the first half of the 20th century, has been recently discovered in the Royal Belgian Institute of Natural Sciences. These fossils were found in the Kaiping Coalfield in Hebei Province, China, and represent a unique assemblage of insects from a specific horizon in the Tangshan Formation. To facilitate further research on Mathieu's collection, this study provides a detailed scientific background and re-illustrates the arachnids, crustaceans, and insects from the Zhaogezhuang colliery using Reflectance Transformation Imaging methodology.
Article
Forestry
Satoshi Yamanaka, Yuichi Yamaura, Katsuhiko Sayama, Shigeho Sato, Kenichi Ozaki
Summary: Retention forestry, specifically dispersed broadleaved retention, was found to increase forest species abundance in conifer plantations, while aggregated retention may decrease species abundance. At high retention levels, the efficacy of dispersed broadleaved retention in maintaining species richness may exceed that of aggregated retention.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Review
Plant Sciences
Ludwig Luthardt, Jean Galtier, Brigitte Meyer-Berthaud, Vaclav Mencl, Ronny Roessler
Summary: Medullosans, a diverse group of pteridosperms, were widely distributed in late Paleozoic forested landscapes, mainly in the tropical lowland basins of Euramerica and intramontane basins of Central Europe. These plants thrived in seasonally-dry paleoclimates on wet clastic soils, showing proximity to the groundwater level, and mainly existed as part of the forest understorey. Their architectural and anatomical features suggest a high water-conducting potential and raise questions about their ecological role in early Permian habitats.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2021)
Article
Ecology
Viacheslav Kharuk, Sergei T. Im, Il'ya A. Petrov, Maria L. Dvinskaya, Alexandr S. Shushpanov, Alexei S. Golyukov
Summary: The mortality rates of Siberian pine and fir have significantly increased in recent decades due to elevated air temperatures, acute droughts, and insect attacks. Mortality mainly occurs at low elevations, while areas with sufficient moisture see an increase in tree growth increment and forest area.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2021)
Article
Multidisciplinary Sciences
William J. Matthaeus, Sophia Macarewich, Jon D. Richey, Jonathan P. Wilson, Jennifer C. McElwain, Isabel P. Montanez, William A. DiMichele, Michael T. Hren, Christopher J. Poulsen, Joseph D. White
Summary: Researchers used climate modeling and ecosystem-process modeling to study the impact of ancient plant physiology on vegetation-climate feedbacks. The findings suggest that freeze intolerance of ancient plants could have restricted forest cover, leading to changes in surface runoff, CO2 levels, and other ecosystem and climate factors.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Geosciences, Multidisciplinary
Jiri Bek, Stanislav Oplustil
Summary: Unpublished data from palynological investigation of coal and carbonaceous rocks from over thirty boreholes drilled in the Czech sector of the Intra-Sudetic Basin in the second half of the 20th century were taxonomically upgraded and analyzed for stratigraphic and systematic evaluation. A total of 78 genera and 322 miospore and pollen species were recorded within a radioisotopically constrained 21 million-year interval, spanning middle Bashkirian to early Asselian times. The miospore and pollen assemblages of coal seams are characterized by important genera and taxa, and five new palynozones of the basin were recognized.
BULLETIN OF GEOSCIENCES
(2021)
Article
Plant Sciences
Yao-feng Cai, Hua Zhang, Zhuo Feng, Xu-dong Gou, Uugantsetseg Byambajav, Yi-chun Zhang, Dong-xun Yuan, Wen-kun Qie, Hai-peng Xu, Chang-qun Cao, Ariunchimeg Yarinphil, Shu-zhong Shen
Summary: In this study, the permineralised stems of Ductoagathoxylon tsaaganensis from the Upper Permian strata in the South Gobi Basin, Mongolia were described. The stems showed well-preserved pith and primary and secondary xylems, revealing various morphological and anatomical features. The findings provide valuable insights into the plant diversity, climate, and ecology of the Late Permian in the Angara flora.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Geography, Physical
Longyi Shao, Fanghui Hua, Juan Wang, Xingkai Ji, Zhiming Yan, Tianchang Zhang, Xuetian Wang, Shimin Ma, Tim Jones, Huinan Lu
Summary: This study examines palynological successions from the late Permian to the Early Triassic in southwestern China and identifies four distinct palynofloral assemblages. The results suggest that the Permian-Triassic mass extinction had a significant impact on terrestrial vegetation in southwestern China. The findings support the hypothesis that the extinction process of terrestrial vegetation was a two-staged and longer-duration event.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Mycology
Ludovic Le Renard, Ruth A. Stockey, Garland Upchurch, Mary L. Berbee
Article
Plant Sciences
Ruth A. Stockey, Gar W. Rothwell
AMERICAN JOURNAL OF BOTANY
(2020)
Article
Plant Sciences
Ludovic Le Renard, Andre L. Firmino, Olinto L. Pereira, Ruth A. Stockey, Mary L. Berbee
AMERICAN JOURNAL OF BOTANY
(2020)
Article
Geology
Gar W. Rothwell, Ruth A. Stockey, Selena Y. Smith
CRETACEOUS RESEARCH
(2020)
Article
Plant Sciences
Ruth A. Stockey, Gar W. Rothwell, Brian A. Atkinson
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2020)
Article
Plant Sciences
Alexander C. Bippus, Gar W. Rothwell, Ruth A. Stockey
Summary: This study reports the discovery of a well-preserved fossil moss gametophyte from the late Cretaceous period in the Arctic region, specifically along the Colville River on the North Slope of Alaska. The fossil, identified as Cynodontium luthii sp. nov., is an extinct species belonging to a genus known from the High Arctic today, providing new insights into the evolutionary history of Arctic moss flora and their adaptation to different climates over time.
AMERICAN JOURNAL OF BOTANY
(2021)
Article
Plant Sciences
Ruth A. Stockey, Georgia L. Hoffman, Gar W. Rothwell
Summary: Nearly 200 araceous leaves and two spadices from the Paleocene fossils near Blackfalds, Alberta, Canada have been identified, likely representing parts of the same extinct plant species. The study used light microscopy and phylogenetic analyses to determine the relationships within Araceae. The leaves and spadices belong to an early-diverging lineage of Araceae, providing evidence of extinct Proto-Araceae shortly after the Cretaceous-Paleogene floral transition.
AMERICAN JOURNAL OF BOTANY
(2021)
Article
Plant Sciences
Brian A. Atkinson, Dori L. Contreras, Ruth A. Stockey, Gar W. Rothwell
Summary: This study characterizes two new extinct genera of conifers, expanding the taxonomic and morphological diversity within the Cunninghamioideae subfamily. The research shows that Cunninghamioideae peaked in diversity during the Cretaceous, with most extinct genera disappearing by the end of the Campanian period.
Article
Plant Sciences
Ludovic Le Renard, Ruth A. Stockey, Garland R. Upchurch, Mary L. Berbee
Summary: A new fungal sporocarp type with radiate scutella growing from the stomata of conifer leaves in the Lower Cretaceous was discovered, representing a now extinct group of leaf-dwelling Dothideomycetes. This unique morphology contributes to the understanding of the range of character combinations of early epiphyllous Ascomycota.
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2021)
Article
Plant Sciences
Ashley A. Klymiuk, Gar W. Rothwell, Ruth A. Stockey
Summary: The newly discovered Xadzigacalix quatsinoensis gen. et sp. nov. is characterized by unique seed morphology and may have affinities with either gnetophytes or angiosperms. Additionally, a critical re-evaluation of ovulate structures for Mesozoic gymnosperms has provided new insights into plant diversity immediately preceding the explosive diversification of flowering plants.
AMERICAN JOURNAL OF BOTANY
(2022)
Article
Geology
Gar W. Rothwell, Ruth A. Stockey
Summary: Sixty-seven coalified compression specimens of leaves, including a new amphibious aquatic plant, have been discovered near Cardston, Alberta, Canada. The study compares these specimens with other fossil and extant aquatic plants, highlighting the importance of understanding wetland habitats during the Late Cretaceous.
CRETACEOUS RESEARCH
(2022)
Article
Plant Sciences
Nathaniel L. Edmonds, Ruth A. Stockey, Gar W. Rothwell
Summary: This research identifies and studies fossils of a new floating aquatic angiosperm from the Late Cretaceous period. The plant exhibits similar growth habits to several extant taxa, but differs in leaf venation and presence of compound leaves. The fossils are described as a new genus and species, Tolmania aquatica, which is similar to a previously known fossil species Quereuxia angulata.
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2022)
Article
Plant Sciences
Harufumi Nishida, Ruth A. Stockey, Yusuke Takebe, Julien Legrand, Toshihiro Yamada
Summary: This study describes a new genus of a probable stem polypodioid leptosporangiate fern based on a permineralized fertile pinnule from the Late Cretaceous Yezo Group in Hokkaido, Japan. The study provides insights into the diversity of ferns during this period, challenging previous assumptions.
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2022)
Article
Plant Sciences
Gar W. Rothwell, Ruth A. Stockey, Dennis W. Stevenson, Cecilia Zumajo-Cardona
Summary: This research examines fossil seeds from the Jurassic period in Haida Gwaii, western Canada to study the evolution of cycads. The fossil seeds are described as a new species called Traskia maahlae, which shares similar seed structure and germination mode with living cycads. The study adds to the paleontological data on stem and crown group cycads, suggesting that cycad seed germination modes evolved during the Mesozoic and crown group cycad species may have appeared in the Cenozoic.
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2022)
Article
Plant Sciences
Ludovic Le Renard, Ruth A. Stockey, Garland R. Upchurch, Mary L. Berbee
Summary: The study identified a new taxon of early Dothideomycetes with unique characteristics, found in Lower Cretaceous deposits in Virginia, USA, dating back to 125-113 million years ago.
AMERICAN JOURNAL OF BOTANY
(2021)
