Article
Geology
Antonio Enrique Sayao Sanjines, Marta Claudia Viviers, Denize Santos Costa, Geise de Santana dos Anjos Zerfass, Gerhard Beurlen, Oscar Strohschoen Jr
Summary: This study describes and interprets the upper Aptian planktonic foraminifera assemblages in the post-salt section of the Santos, Campos, and Espirito Santo Brazilian marginal basins, providing insights into biostratigraphy and relative ages. The analysis of material from 26 wells reveals that the marine sedimentary rocks deposited above the evaporitic sequence are of upper Aptian age. This reassessment of the biostratigraphic framework suggests an earlier establishment of a marine environment in the studied basins, contributing to the understanding of early South Atlantic Ocean geological evolution.
CRETACEOUS RESEARCH
(2022)
Article
Geography, Physical
Krzysztof Pleskot, Karina Apolinarska, Les C. Cwynar, Bartosz Kotrys, Mariusz Lamentowicz
Summary: The research suggests a persistent regional climate pattern in which the drying of peatlands in northern Poland coincides with warming over long timescales. While there were simultaneous shifts in hydrological and temperature reconstructions on shorter timescales, the relationship between the two variables was surprisingly strong at centennial to millennial timescales, indicating that drought conditions change along with summer temperatures. Further peatland drying is expected in northern Poland if this millennial-scale pattern holds for the projected warming.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geography, Physical
Almudena Martinez-Monzon, Christian Sanchez-Bandera, Ana Fagoaga, Oriol Oms, Jordi Agusti, Deborah Barsky, Jose Solano-Garcia, Juan Manuel Jimenez-Arenas, Hugues-Alexandre Blain
Summary: Amphibians are excellent indicators of ecological and climatic changes, with their adaptative capacities revealing the impacts of climate and environmental changes. Sites in SE Spain offer a unique opportunity to study these changes, revealing a negative association between amphibian body size and primary productivity, as well as a positive correlation with species richness.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Paleontology
M. -b. Forel, S. Crasquin
Summary: This study provides the first comprehensive analysis of the diversity of marine and brackish-water ostracods over the entire Triassic period, considering paleoecological, paleoenvironmental, and paleogeographical contexts. The research found that although early Triassic diversity was poor, the roots of taxonomic rediversification were visible as early as the Dienerian stage. The explosive diversification of the Spathian and Anisian stages was followed by a high-diversity plateau until the end-Triassic extinction. The study also discovered traces of typical Mesozoic drilling predation on Late Triassic ostracods, indicating an increase in the efficiency of predators' drilling abilities during the Triassic. In terms of paleogeographical distribution, there were distinct peri-palaeo-tethyan and peri-neotethyan biotas in the Early Triassic, followed by dispersal and relative homogenization from the Anisian onwards.
MARINE MICROPALEONTOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jack Longman, Torben Struve, Katharina Pahnke
Summary: This study quantifies changes in South Pacific dust provenance for the Holocene and the Last Glacial Maximum (LGM) using Bayesian mixing models and existing radiogenic isotope data. The study finds that during the LGM, a higher proportion of dust entering the South Pacific was from South America, compared to the Holocene. Australian dust contributions were also lower during the LGM, with significant spatial gradients for both time slices.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2022)
Article
Geology
Darko Spahic, Tivadar Gaudenyi
Summary: The study indicates that the narrowing between the tapering northeastern Adria margin and the European promontory during the post-Neotethyan era was driven by oblique subduction. The developing Conacian - Santonian narrowing corridor includes a series of limited volume Campanian magmatic activities aligned with the relevant plates. These small magma pools are sealed shortly after by time-equivalent melange, along with the formation of turbidites.
CRETACEOUS RESEARCH
(2022)
Article
Paleontology
John-Paul Zonneveld, Anthony R. Fiorillo, Stephen Hasiotis, Murray K. Gingras
Summary: Phrases incorporating the modifier 'mark' have recently faced criticism. However, these phrases, such as bite mark and tooth mark, are widely used and align with the original definition of the word mark in scientific and other relevant literature. Therefore, using 'mark' as a modifier is appropriate and useful for interdisciplinary communication.
ICHNOS-AN INTERNATIONAL JOURNAL FOR PLANT AND ANIMAL TRACES
(2022)
Article
Biology
Marina Kirichenko-Babko, Evgeny E. Perkovsky, Dmitry V. Vasilenko
Summary: This research describes a new species, Antephilorhizus zerovae, found in Rovno amber and compares it with other species, providing a clearer diagnosis for the genus and a key to identify both species.
HISTORICAL BIOLOGY
(2022)
Article
Paleontology
Thomas M. Cullen, Shuangquan Zhang, Joseph Spencer, Brian Cousens
Summary: Stable and radiogenic isotopes are powerful tools for reconstructing ecological and environmental patterns in ancient ecosystems. This study analyzes fossil samples from a well-sampled site in North America to test if megaherbivores partitioned their niches based on spatial patterns of occupation and resource-use. The results indicate differences in resource-use patterns and overlap in habitats among different herbivore species.
Article
Paleontology
Rene Hoffmann, Michael K. Howarth, Dirk Fuchs, Christian Klug, Dieter Korn
Summary: This study reviews and suggests the appropriate naming and classification for ammonoids, proposing the rank of a superorder and an order to avoid inconsistencies in cephalopod taxonomy.
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
(2022)
Article
Paleontology
Brian T. Huber, Maria Rose Petrizzo, Francesca Falzoni
Summary: This study presents a revised taxonomy and phylogeny for planispiral planktonic foraminiferal species from the Albian to Maastrichtian period, previously classified under Globigerinelloides. The revised taxonomy is based on ontogenetic morphometric data, shell wall ultrastructure, and morphologic features from primary and hypotype specimens. The study identifies new genera and species and provides insights into the evolution of these foraminifera.
Article
Paleontology
Mark J. Powers, Matteo Fabbri, Michael R. Doschak, Bhart-Anjan S. Bhullar, David C. Evans, Mark A. Norell, Philip J. Currie
Summary: Eudromaeosauria, a group of derived dromaeosaurids, has a controversial evolutionary history. This study used computed tomography to analyze the maxillae of Acheroraptor, Atrociraptor, and Deinonychus, comparing them with other Eudromaeosauria species from Asia and North America. Through improved morphometric characters and phylogenetic analysis, three well-defined clades within Eudromaeosauria were identified, supporting the fossil record's occurrence data.
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2022)
Article
Paleontology
Ignacio A. Cerda, Diego Pol, Alejandro Otero, Anusuya Chinsamy
Summary: We conducted a detailed histological study on the long bones of Mussaurus patagonicus, an early sauropodomorph dinosaur from the Lower Jurassic of Argentina. Our study found that the growth rate of this dinosaur varied significantly among individuals and had a weak correlation with body size. Additionally, there were variations in growth strategies among different individuals. Sexual maturity and somatic maturity in Mussaurus occurred relatively late compared to other early sauropodomorph dinosaurs, but more similar to derived sauropods. These findings provide critical information for understanding the origin of sauropods and the development of gigantism in this lineage.
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
Geology
Carolin Geissler, Ulrich Kotthoff, Joerg U. Hammel, Mark S. Harvey, Danilo Harms
Summary: This paper presents the first fossil record of the pseudoscorpion family Ideoroncidae and establishes the new genus Proalbiorix, showing morphological features aligning it with present-day fauna from the Americas and Africa. The study highlights the relative morphological stasis of pseudoscorpions compared to other arachnid lineages and the establishment of major clades of pseudoscorpions before the Cretaceous period.
CRETACEOUS RESEARCH
(2022)
Article
Paleontology
Alberto Collareta, Marco Merella, Mark Bosselaers, Simone Casati, Andrea Di Cencio, Giovanni Bianucci
Summary: Members of the family Platylepadidae are mostly found embedded in the carapace and plastron of sea turtles, with limited fossil records. A new isolated boring on a fossil cheloniid costal plate suggests ancient platylepadids had a symbiotic relationship with sea turtles. Future research should focus on further investigating potential bone damage by turtle-dwelling barnacles and searching for attachment scars in Cenozoic marine turtle fossils.
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
(2022)
Article
Geography, Physical
Yanrong Zhang, Yunqing Li, Lina Liu, Nannan Wang, Xianyong Cao
Summary: The study analyzed a core sample from Xing Co, a small lake on the northeastern Tibetan Plateau, to investigate the vegetation change and impact of human activities over the past 1440 years. The findings suggest a shift from alpine meadow to dry alpine steppe, possibly due to climate changes. Recent vegetation changes are likely influenced by enhanced human impacts.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Oluwaseun Edward, Christoph Korte, Clemens Ullmann, Jorge Colmenar, Nicolas Thibault, Gabriella Bagnoli, Svend Stouge, Christian M. O. Rasmussen
Summary: The study presents new records of brachiopod carbon and oxygen isotopes from Öland, Sweden, which, together with previously published data from the East Baltic region, provide valuable insights into the paleoenvironment and the Great Ordovician Biodiversification Event in the Baltoscandia. The findings highlight the regional consistency and global correlation utility of the carbon and oxygen isotope records and suggest a link between biotic radiations and climatic cooling during the Darriwilian Stage.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2022)
Article
Geology
A. N. A. Zippel, Carolin Haug, Christel Hoffeins, Hans-Werner Hoffeins, Joachim T. Haug
Summary: Beetle larvae play an important ecological role in wood decomposition and carbon cycling, yet they have been underexplored. In this study, new specimens of beetle larvae, including both extant and fossil ones, were reported. The shape analysis of their terminal end revealed a difference between Eocene and extant specimens.
RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA
(2022)
Article
Geography, Physical
Yingyue Yu, Li Tian, Daoliang Chu, Huyue Song, Wenwei Guo, Jinnan Tong
Summary: A study of paleosols in the Permian-Triassic Shichuanhe section in China revealed six types of paleosols and changes in precipitation between the late Permian and early Triassic. The results suggest that local aridity in the late Permian contributed to mass extinction, while intensified precipitation in the late Early Triassic facilitated ecological recovery on land.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
