Article
Geosciences, Multidisciplinary
Andrew S. Merdith, Simon E. Williams, Alan S. Collins, Michael G. Tetley, Jacob A. Mulder, Morgan L. Blades, Alexander Young, Sheree E. Armistead, John Cannon, Sabin Zahirovic, R. Dietmar Mueller
Summary: Recent progress in plate tectonic reconstructions has expanded beyond continental drift to reconstruct the full evolving configuration of tectonic plates and plate boundaries. A continuous full-plate model spanning 1 billion years to present-day has been developed, incorporating a revised model for the Neoproterozoic-Cambrian period and connecting it with models of the Phanerozoic. The model is geologically constrained and based on preserved data from past plate boundaries, with the goal of providing a detailed and self-consistent tectonic reconstruction for the last billion years of Earth's history.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geography, Physical
Matthias Alberti, Franz T. Fuersich, Dhirendra K. Pandey, Debahuti Mukherjee, Nils Andersen, Dieter Garbe-Schonberg
Summary: The study reconstructed the climatic changes in the Middle and Late Jurassic period using well-preserved fossils from the Kachchh and Jaisalmer basins in western India. The results show a long-term temperature decrease in the study area from the Bajocian to the Tithonian, as well as seasonal temperature changes and sea-level variations.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geography, Physical
T. Palacios, S. Jensen, J. J. Alvaro, J. F. Santos Zaldeugui, L. Eguiluz, F. Corfu, J. I. Gil Ibarguchi
Summary: The detailed record of diagnostic acritarchs from the volcanosedimentary Vallehondo and Playon formations allows the establishment of a fine acritarch-based chronostratigraphy applicable to the Acado-Baltic Province. The maximum diversification of acritarchs in the Miaolingian coincides with the onset of basaltic pillow lava flows in the Playon Formation, reflecting a major rifting episode.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Zhiliang Zhang, Mansoureh Ghobadi Pour, Leonid E. Popov, Lars E. Holmer, Feiyang Chen, Yanlong Chen, Glenn A. Brock, Zhifei Zhang
Summary: This study in South China reveals the oldest Cambrian brachiopod-trilobite association, providing potential for stratigraphic correlation. The new species Eoobolus incipiens represents one of the earliest linguliform brachiopods.
Article
Paleontology
Matilde Sylvia Beresi, Osvaldo Luis Bordonaro
Summary: This study reports and describes a chancelloriid fauna for the first time, which exhibits taxonomic composition similar to other Cambrian species in different regions. Based on the construction of sclerites, different articulatory facet types can be used to distinguish between chancelloriid species, and the number of rays is closely related to the arrangement of sclerite rays. This study is significant for understanding the diversity of chancelloriid fauna in the middle Cambrian platform of the Precordillera.
Article
Geography, Physical
Zhiyao Zhang, Guangyou Zhu, Guanghui Wu, Tingting Li, Xueqian Feng, Yinghao Jing
Summary: The study presents carbon and oxygen isotope data of Ediacaran-Cambrian siliciclastic-carbonate from northwestern Tarim Craton, proposing correlations with other basins and suggesting the involvement of Tarim Craton in the Pan-African Orogeny during the assembly of Gondwana.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geology
Andrea De Sosa Tomas, Carles Martin-Closas, Patricia Vallati, J. Marcelo Krause
Summary: During the Early Cretaceous, charophyte assemblages varied in complexity in lakes at different latitudes. The charophyte assemblages from the Los Adobes Formation in central Patagonia were unique, consisting mainly of several species belonging to the early characean genus Mesochara, considered ancestral to modern species.
CRETACEOUS RESEARCH
(2022)
Article
Biology
Buqing Wei, Yuan Wang, Xinglian Yang, Weiyi Wu
Summary: A number of well-preserved fossils of Hadrotreta were found in south China for the first time in the Tsinghsutung Formation. Hadrotreta shows an expanding trend in global distribution from the Cambrian Age 4 to the Miaolingian Epoch, with a preference for low-latitude regions. It was mainly found in deep-water continental shelf environments during the Cambrian Epoch 2, Age 4, but later expanded its distribution to shallow-water platform environments during the Miaolingian Epoch.
Article
Geochemistry & Geophysics
Matheus F. de Lima, Fabricio A. Caxito, Ross Large, Indrani Mukherjee, Gabriel J. Uhlein, Joao Pedro T. M. Hippertt, Pedro T. M. Hippertt, Samuel A. Moura, Juliana Okubo, Lucas Warren
Summary: Trace element analysis of syn-sedimentary pyrite is used to track the redox and nutrient variations in the Ediacaran-Cambrian Bambui Group of eastern Brazil. The results indicate the importance of oxidative continental weathering and the development of ferruginous bottom water conditions, which had a negative impact on the development of Ediacaran-Cambrian ecosystems.
Article
Evolutionary Biology
John R. Paterson, Diego C. Garcia-Bellido, Gregory D. Edgecombe
Summary: Two species of Radiodonta from the Emu Bay Shale in South Australia have been revised based on new field collections and recent advances in knowledge of radiodonts. Anomalocaris briggsi is designated as the type species of a new genus called Echidnacaris, while the less common species is named Anomalocaris daleyae. Oral cones have been assigned to both species, and the oral cone of Echidnacaris briggsi is the best preserved among all known radiodonts. Shared characters of the oral cones support the relationship between Tamisiocarididae and Anomalocarididae. Unique eye characters found in E. briggsi are tentatively regarded as diagnostic for Echidnacaris.
JOURNAL OF SYSTEMATIC PALAEONTOLOGY
(2023)
Article
Geochemistry & Geophysics
Yajun Xu, Xiao Liang, Peter A. Cawood, Jian-Wei Zi, Hangchuan Zhang, Jia Liu, Yuansheng Du
Summary: By analyzing the U-Pb ages of detrital monazite from Cambrian sedimentary rocks, we suggest that South China was located outboard of northeastern India. The detrital monazite ages indicate input from earliest Cambrian metapelites and provide tighter constraints on the paleogeography of South China compared to detrital zircon data alone.
Article
Paleontology
Marton Venczel, Zoltan Szentesi, James D. Gardner
Summary: Hungarobatrachus szukacsi, a Late Cretaceous anuran, is a neobatrachian with unique skeletal features, indicating a potential dispersal from Africa and into Laurasia during the late Cretaceous.
Review
Geosciences, Multidisciplinary
Yousef Zoleikhaei, Jacob A. Mulder, Peter A. Cawood
Summary: By analyzing the detrital zircon and rutile from the early Paleozoic Lalun Formation in Iran, it was found that most of the detrital sediments originated from the Neoproterozoic age, and the Arabian-Nubian Shield may be a more suitable source for the formation. This study reveals a complex pattern of sediment dispersal along the northern margin of Gondwana and challenges the idea of a well-mixed, far-travelled sand sheet.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geology
Maxime Padel, Sebastien Clausen, Marc Poujol, Jose Javier Alvaro
Summary: Detrital zircon grains from Cambrian-Lower Ordovician sediments in the Pyrenees provide insights into their provenance sources and the geodynamic evolution of the northwestern Gondwana margin. The zircon populations and age distributions suggest a gradual shift from Panafrican/Anti-Atlasian to Saharan Metacraton/Arabian Nubian Shield sources, supporting similar trends in other geological indicators. The study also highlights the importance of Cambrian deposition in the Pyrenean Basin.
Article
Geosciences, Multidisciplinary
Eben Blake Hodgin, Juan Carlos Gutierrez-Marco, Jorge Colmenar, Francis A. Macdonald, Victor Carlotto, James L. Crowley, Justin R. Newmann
Summary: This study provides detailed insights into the tectonic and evolutionary history of the Eastern Cordillera in Peru, with important evidence related to the accretion of the Arequipa Terrane. It sheds light on the early Paleozoic tectonic history of the region and presents a new tectonic model explaining the late Neoproterozoic to early Cambrian collision events.
Article
Biochemistry & Molecular Biology
Bradley Deline, Jeffrey R. Thompson, Nicholas S. Smith, Samuel Zamora, Imran A. Rahman, Sarah L. Sheffield, William Ausich, Thomas W. Kammer, Colin D. Sumrall
Article
Paleontology
Fernando A. Ferratges, Samuel Zamora, Marcos Aurell
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
(2020)
Letter
Multidisciplinary Sciences
Samuel Zamora, David F. Wright, Rich Mooi, Bertrand Lefebvre, Thomas E. Guensburg, Przemyslaw Gorzelak, Bruno David, Colin D. Sumrall, Selina R. Cole, Aaron W. Hunter, James Sprinkle, Jeffrey R. Thompson, Timothy A. M. Ewin, Oldrich Fatka, Elise Nardin, Mike Reich, Martina Nohejlova, Imran A. Rahman
NATURE COMMUNICATIONS
(2020)
Article
Paleontology
Imran A. Rahman, James O'Shea, Stephan Lautenschlager, Samuel Zamora
Article
Geography, Physical
Fernando A. Ferratges, Samuel Zamora, Marcos Aurell
Summary: The lower Eocene coral reef in the Ramals area of the southern Pyrenees in northeast Spain preserved a high diversity of invertebrate groups, including decapod crustaceans. Statistical analysis of the distribution of decapod crustaceans across different reefal domains showed preferences for specific reef areas for certain species, with most crustaceans concentrated in the periphery of the reef mounds.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Fernando Ari Ferratges, Matus Hyzny, Samuel Zamora
Summary: Decapod crustaceans from the Forcall Formation in the Oliete Sub-basin of northeast Spain are studied, with the most common species being the glypheid lobster Athe-rfieldastacus magnus. The study reveals different preservation modes and their impact on assemblage diversity. The parautochthonous nature of the assemblages suggests preservation within or close to their habitat by obrution events in an offshore setting.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Samuel Zamora, Mikel A. Lopez-Horgue
Summary: The discovery of the cyrtocrinid crinoid Proholopus holopiformis in the upper Albian succession in Spain provides valuable insights into the species' ecological habits and distribution, and contributes to the classification of this species and its family.
CRETACEOUS RESEARCH
(2022)
Article
Biology
Samuel Zamora, Imran A. Rahman, Colin D. Sumrall, Adam P. Gibson, Jeffrey R. Thompson
Summary: This study describes a new pentaradial echinoderm species, Yorkicystis haefneri n. gen. n. sp., which provides the oldest evidence of secondary non-mineralization of the echinoderm skeleton. The research reveals that the axial region is originally calcified while the extraxial region is non-mineralized, suggesting a secondary reduction of the skeleton in Yorkicystis. This reduction may have allowed for greater flexibility of the body wall.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Paleontology
Fernando A. Ferratges, Pedro Artal, Barry W. M. van Bakel, Samuel Zamora
Summary: This study describes a highly diversified fauna of hermit crabs associated with reef environments from the Serraduy Formation (lower Eocene) in the southern Pyrenees (Huesca, Spain). It represents one of the highest paguroid diversities in a single Eocene outcrop worldwide, including six newly identified species. The findings demonstrate that paguroids were diverse by the early Eocene in coral-reef environments and contribute to filling the knowledge gap between the poorly known Paleocene assemblages and the more diverse mid- to late Eocene ones.
JOURNAL OF PALEONTOLOGY
(2023)
Article
Paleontology
Fernando A. Ferratges, Javier Luque, Jose Luis Dominguez, Alex Osso, Marcos Aurell, Samuel Zamora
Summary: This article describes a unique fossilized higher true crab from the upper Eocene in northern Spain and examines its anatomy and phylogenetic relationships. The discovery is significant for understanding the biogeographical distribution, origins, and anatomical diversity of Eocene eubrachyurans.
PAPERS IN PALAEONTOLOGY
(2023)
Article
Multidisciplinary Sciences
Stephen Pates, Samuel Zamora
Summary: The discovery of fossils in high latitude Cambrian deposits expands our understanding of the evolution and radiation of early animal life, revealing the significance of animal diversity and paleogeographic trends.
ROYAL SOCIETY OPEN SCIENCE
(2023)
Article
Paleontology
Samuel Zamora, David F. Wright, Martina Nohejlova
Summary: The fossil species 'Asturicystis' havliceki Fatka & Kordule from the middle Cambrian of Bohemia (Czech Republic) is re-described as a new genus Bohemiacinctus. Phylogenetic analyses show that Bohemiacinctus havliceki is distantly related to Asturicystis and is likely an early representative of the family Sucocystidae. The results highlight the importance of accurate morphological character descriptions and taxonomy in phylogenetic analyses of fossil taxa, especially for small clades like cinctans.
PAPERS IN PALAEONTOLOGY
(2023)
Article
Paleontology
Jun Zhao, Imran A. Rahman, Samuel Zamora, Ailin Chen, Peiyun Cong
Summary: The article describes the fossil of Sprinkleoglobus extenuatus gen. et sp. nov. from Yunnan Province, China, which represents the first unequivocal echinoderm discovered from the early Cambrian of South China and among the oldest globally. Research suggests that early echinoderms were adapted for attaching to hard substrates, indicating that the so-called Cambrian substrate revolution was not a strong control on early evolution of attachment in echinoderms.
PAPERS IN PALAEONTOLOGY
(2022)
Article
Paleontology
Fernando Ferratges, Samuel Zamora, Marcos Aurell
ACTA PALAEONTOLOGICA POLONICA
(2020)
Article
Paleontology
Samuel Zamora, James Sprinkle, Colin D. Sumrall
ACTA PALAEONTOLOGICA POLONICA
(2020)