Article
Geosciences, Multidisciplinary
Xue Miao, Daoliang Chu, Jinnan Tong, Michael J. Benton, Jianxin Yu, Liang Luo, Wenchao Shu, Yuyang Wu
Summary: The study documented the morphology and biostratigraphic significance of Euestheria gutta based on well-preserved fossils from southwestern China, suggesting it could be used as an index fossil for continental stratigraphic division and correlation. The catastrophic loss of tropical rainforest vegetation, enhanced wildfire, and a negative carbon isotope excursion during the P-Tr transition were observed in southwestern China, where E. gutta appeared at the onset of the negative CIE and just above the horizon of the loss of macroflora.
GEOLOGICAL JOURNAL
(2021)
Article
Geography, Physical
Michal Matysik, Michal Stachacz, Dirk Knaust, Martin J. Whitehouse
Summary: This study describes the characteristics of different types of omission levels in Middle Triassic platformal carbonates in Upper Silesia, southern Poland, including firmgrounds, hardgrounds, and intraformational conglomerates.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geology
Domenico C. G. Ravida, Luca Caracciolo, Saturnina Henares, Meike Janssen, Harald Stollhofen
Summary: The study investigates the environmental response to external forcings on continental successions at the southeast margin of the Central European Basin System in Germany, integrating high-resolution core-logging and quantitative sedimentary petrography. Environmental changes are accentuated by variations in sediment composition, suggesting distinct drainage evolutions regulated by upstream climate and tectonic controls.
Article
Genetics & Heredity
Xiaoyan Sun, Jinhui Cheng
Summary: The deep phylogenetic relationships within spinicaudatans remain a challenge, with competing hypotheses regarding the interrelationships among several families. Sequence variation and structure models of two rRNA genes were focused on in order to explore inconsistencies, revealing heterogeneity and conserved motifs across species. Bayesian analyses on nuclear and mitochondrial genes recovered a congruent topology with high support for Limnadiidae as a sister group to Leptestheriidae + Eocyzicidae, while alternative hypotheses provided implicit support for four competing topologies.
Article
Zoology
Sameer M. Padhye, Mihir R. Kulkarni, Marco Pagni, Nicolas Rabet
Summary: This study resolves some taxonomy issues in Spinicaudatan clam shrimps through integrative taxonomy and describes two new species, Leptestheria chalukyae and Leptestheria gomantaki, along with their unique morphological characters and phylogenetic position. It also re-describes Leptestheria nobilis and provides an overview of the morphological characters of all Indian leptestherids. Although most conventional taxonomic characters overlap among Indian species, the combination of occipital condyle shape and cercopod marginal spines arrangement may be useful in separating leptestherid species.
Article
Geography, Physical
L. Caracciolo, D. C. G. Ravida, D. Chew, M. Janssen, N. K. Luensdorf, W. A. Heins, T. Stephan, H. Stollhofen
Summary: This study reconstructs the sedimentary response to climatic and tectonic perturbations in the Germanic Basin, showing changes in sediment flux across different periods and how they are influenced by regional extensional tectonics and climbing humidity. Through a multifaceted approach, the research sheds light on the interaction of climate, tectonics, and lithology on sediment production and drainage evolution.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Geography, Physical
Domenico C. G. Ravida, Luca Caracciolo, William A. Heins, Harald Stollhofen
Summary: This study presents a reliable workflow for estimating paleo-sediment fluxes and demonstrates changes in sediment load over different time intervals. The estimated values align with modern drainage systems, providing new insights into the evolution of continental sequences.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Biology
Murphy Tladi, Ryan J. Wasserman, Ross N. Cuthbert, Tatenda Dalu, Casper Nyamukondiwa
Summary: The study revealed that taxonomic relatedness is a better predictor of thermal preference and critical thermal limits for large branchiopods in thermally dynamic wetland ecosystems, rather than the environment of origin. Spinicaudatans showed higher tolerance to high temperatures and preferred higher temperatures compared to anostracans, indicating a potential difference in thermal adaptation strategies between the two taxonomic groups.
JOURNAL OF THERMAL BIOLOGY
(2021)
Article
Zoology
Sameer M. Padhye, Nicolas Rabet
Summary: Based on the latest molecular phylogeny of spinicaudatan clam shrimps, we establish a new species called Leptestheria timmsi sp. nov., which was previously classified as Eoleptestheria ticinensis. We provide a detailed description of this species, focusing on previously unexplored morphological features. Additionally, we compare Leptestheria timmsi sp. nov. with other Eoleptestheria species and populations worldwide. Unlike many other populations, the size of telsonic and cercopod marginal spines in L. timmsi sp. nov. seems to increase posteriorly.
Article
Paleontology
Yu Pei, Jan-Peter Duda, Jan Schoenig, Cui Luo, Joachim Reitner
Summary: The study reveals that the 'stromatolites' in the Germanic Basin during the Middle Triassic should more accurately be referred to as microbe-metazoan build-ups. These build-ups were influenced by elevated salinities and were likely widespread during the Early to Middle Triassic times.
Review
Marine & Freshwater Biology
D. Christopher Rogers, Elizabeth Meyer-Milne
Summary: The limnadiid clam shrimps of southern Africa have been revised, with three new species described. The unique egg ornamentation is used to distinguish the two new Eulimnadia species from their congeners, while the taxonomy and identity of Gondwanalimnadia is discussed in detail as a new species. This new species is distinguished from southern African Eulimnadia by the characters of the genus and the egg.
JOURNAL OF CRUSTACEAN BIOLOGY
(2022)
Article
Geography, Physical
Shunling Wu, Chen Han, Martyn L. Golding, Zhong-Qiang Chen, Zhengyi Lyu, Laishi Zhao
Summary: This study presents integrated conodont biostratigraphy and carbon isotope analysis of the Permian-Triassic boundary (PTB) beds and Lower Triassic succession in the Baoshan block. The dominant conodont faunas in the dolomitized Hewanjie Formation are Hindeodus and Isarcicella species, along with Eurygnathodus and the Ellisoniidae. The conodont zones and carbon isotope profile are consistent with those from other well-documented sections worldwide. The study also indicates a shallow water-depth based on conodont biofacies analysis.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Review
Marine & Freshwater Biology
D. Christopher Rogers, Elizabeth Meyer-Milne
Summary: This study reviewed and revised the southern African species of Leptestheria based on type specimens and new materials, recognizing four species out of the six reported. It clarified the synonymies and provided a key for species identification in southern Africa to aid in further surveys and conservation efforts.
JOURNAL OF CRUSTACEAN BIOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Fernanda Luft-Souza, Gerson Fauth, Mauro D. R. Bruno, Marcelo A. De Lira Mota, Bernardo Vazquez-Garcia, Marcos A. B. Santos Filho, Gerson J. S. Terra
Summary: The fossil-rich sedimentary successions in the Sergipe-Alagoas Basin provide valuable insights into the early stages of the South Atlantic Ocean development and major paleoceanographic events during the late Early Cretaceous.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Binxian Qin, Martyn Lee Golding, Haishui Jiang, Yan Chen, Muhui Zhang, Li Kang, Dacheng Wang, Jinling Yuan
Summary: The study of Middle Triassic conodonts from the Shaiwa Section in the Nanpanjiang Basin helped identify six Anisian conodont zones. The conodont data from Shaiwa Section also suggest that the uppermost strata may be very close to the Anisian-Ladinian boundary. Additionally, the variation in relative abundance of different conodont shapes indicates different environmental preferences.
JOURNAL OF EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Gerd Geyer, Ed Landing
JOURNAL OF AFRICAN EARTH SCIENCES
(2020)
Article
Paleontology
Gerd Geyer, Miguel Caldeira Pais, Thomas Wotte
Article
Paleontology
Gerd Geyer, John S. Peel
JOURNAL OF PALEONTOLOGY
(2020)
Article
Geosciences, Multidisciplinary
Ed Landing, Mark D. Schmitz, Gerd Geyer, Robin B. Trayler, Samuel A. Bowring
Summary: New U-Pb radioisotopic ages on early Cambrian volcanic zircons have led to the development of a high-resolution Bayesian age model, which has constrained the first occurrences and zonations of West Gondwanan archaeocyaths and trilobites in southern Morocco. The results show that the oldest Moroccan trilobite fragments are approximately 1 million years younger than those in Siberia, and around 0.5 million years older than the oldest Avalonian trilobites. The study also highlights taxonomic differences in the oldest trilobites between Cambrian paleocontinents, suggesting a possible appearance of the group as late as around 530 million years ago.
GEOLOGICAL MAGAZINE
(2021)
Article
Geosciences, Multidisciplinary
Ed Landing, Robert L. Ripperdan, Gerd Geyer
GEOLOGICAL MAGAZINE
(2020)
Article
Paleontology
Ed Landing, Gerd Geyer
Summary: The Nigali Dhar syncline succession in the north Indian margin reveals the deposition, fauna, and passive margin evolution from the Terminal Ediacaran to late early Cambrian. The study of ichnofauna in the Upper Tal Group provides insight into paleoenvironmental changes and biological evolution, contributing to the understanding of Lesser Himalaya geologic evolution. The KDF-type ichnofaunas do not support a tropical location of Avalonia, highlighting its unique lithofacies and biotas as a high-latitude continent unrelated to Gondwana.
ICHNOS-AN INTERNATIONAL JOURNAL FOR PLANT AND ANIMAL TRACES
(2021)
Article
Paleontology
Ed Landing, Gerd Geyer, Igor A. Jirkov, Stefano Schiaparelli
Summary: The tiny snail-like conchs of Pelagiella Matthew play a key role in discussions of lophotrochozoan and mollusc evolution during the Cambrian period. However, difficulties in distinguishing between Pelagiella species, their widespread distribution, long lifespan, and the assumption that all Pelagiella spp. are gastropods have led to controversy surrounding the genus. Reevaluation of Pelagiella exigua reveals it to be a polychaete, likely belonging to the newly proposed genus Pseudopelagiella.
PAPERS IN PALAEONTOLOGY
(2021)
Editorial Material
Geosciences, Multidisciplinary
E. D. Landing, Robert L. Ripperdan, Gerd Geyer
Summary: There is controversy regarding the naming of a global negative carbon isotope excursion in the uppermost Cambrian. The HERB Event has met the standards for chemostratigraphic units since 1992, while the TOCE excursion has gone through four temporally distinct events before being synonymized with HERB. However, TOCE fails to meet the recommendations for a formal chemostratigraphic unit. One TOCE homonym is a synonym of HERB.
GEOLOGICAL MAGAZINE
(2022)
Article
Paleontology
Gerd Geyer, Ed Landing, Anna Zylinska
Summary: Eccaparadoxides is a geographically widely distributed trilobite genus with problematic morphologic characteristics for differentiation. Tail parts offer reliable criteria while species known only from cranidia cannot be assigned with certainty. The study refines biostratigraphy and proposes new species within the genus.
Review
Paleontology
Gerd Geyer, Ed Landing, Stefan Meier, Stefan Hoehn
Summary: This article discusses the discovery of a likely graptolite fossil in the lowest Wuliuan strata of the Franconian Forest, which is believed to be the oldest graptolithoid hemichordate found in West Gondwana and possibly the oldest graptolite known to date. The fossil, belonging to the poorly known genus Ovetograptus of the Dithecodendridae family, is a delicate, erect, apparently unbranched rhabdosome with narrow thecae. The report also provides an overview of pre-Furongian graptolithoids and makes slight corrections to the stratigraphic position of previously reported species.
Article
Geosciences, Multidisciplinary
Mehdi Daraei, Aram Bayet-Goll, Gerd Geyer, Nasrin Bahrami
Summary: The Deh-Molla Formation in northern Iran provides valuable insights into global sea-level fluctuations and climate changes during the Furongian Epoch. Its sedimentological characteristics indicate deposition on a sloping platform with fluctuating environmental conditions. The formation's ribbon rocks suggest a temperate latitude zone with seasonal influence from tropical monsoons.
GEOLOGICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Kamal Mghazli, Nezha Lazreq, Gerd Geyer, Ed Landing, Moulay Ahmed Boumehdi, Nasrrddine Youbi
Summary: Diverse helcionelloid molluscs, probable polychaetes, and sclerites of other metazoan groups have been discovered in the Lemdad syncline in southern Morocco. These findings provide valuable insights into paleogeographic connections and interregional and continental biostratigraphic correlation.
JOURNAL OF AFRICAN EARTH SCIENCES
(2023)
Letter
Biology
Ed Landing, Bjoern Kroeger, Stephen R. Westrop, Gerd Geyer
COMMUNICATIONS BIOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Ed Landing, Mark D. Schmitz, Stephen R. Westrop, Gerd Geyer
Summary: High-precision U-Pb zircon dating of SE Newfoundland tuffs has provided new insights into the Avalonian Lower-Middle Cambrian boundary. The study also reveals the presence of an unconformity between the Brigus and Chamberlain's Brook formations. These findings contribute to our understanding of the geological evolution of Avalonia.
GEOLOGICAL MAGAZINE
(2023)
Article
Paleontology
Alfred Uchman, Gerd Geyer
ICHNOS-AN INTERNATIONAL JOURNAL FOR PLANT AND ANIMAL TRACES
(2020)
