Article
Geology
Felix Schlagintweit, Danial Mousavi, Hossein Vaziri-Moghaddam, Mohammad Nikfard
Summary: A new larger benthic foraminifera, Tarburiconus simplex gen. et sp. nov., has been discovered in the upper Maastrichtian Tarbur Formation of southwest Iran. It represents further evidence for an upper Maastrichtian diversification of larger benthic foraminifera and belongs to the Orbitolinidae family, known only from the Upper Cretaceous Global Community Maturation Cycle.
CRETACEOUS RESEARCH
(2023)
Article
Paleontology
Mohsen Yazdi-Moghadam, Felix Schlagintweit
Summary: A new species of orbitolinid, Iraqia ultima, is described from the middle Cenomanian of Iran. Comparisons with other dictyoconids from the same formation are made, and comments on the type-material of the Lower-?mid-Cretaceous type-species Iraqia simplex are provided. The study suggests an increase in diversity of the Dictyoconinae and a decrease in diversity of the Orbitolininae during the Cenomanian.
PALAEONTOGRAPHICA ABTEILUNG A-PALAOZOOLOGIE-STRATIGRAPHIE
(2022)
Article
Paleontology
Felix Schlagintweit, Mohsen Yazdi-Moghadam, Mike Simmons
Summary: Abundant discoidal specimens of the orbitolinid foraminifera Palorbitolinoides hedini Cherchi and Schroeder are recorded from the Kazhdumi Formation in south-west Iran. These limestone beds are useful for regional correlation and age calibration.
MARINE MICROPALEONTOLOGY
(2022)
Article
Geology
Felix Schlagintweit, Ioan I. Bucur
Summary: Orbitolinids with simple embryo and a reduced exoskeletal complexity are reported for the first time from upper Berriasian and upper Valanginian strata of the Getic Carbonate Platform system in Romania. Most of the described taxa belong to the genera Cribellopsis Arnaud-Vanneau and Orbitolinopsis Henson. Other taxa are treated in open nomenclature due to limited available material and/or poor preservation. The presence of dictyo-conids in the Southern Carpathians during the upper Berriasian and upper Valanginian periods expands the paleogeographic distribution of these larger benthic foraminifera. (c) 2023 Elsevier Ltd. All rights reserved.
CRETACEOUS RESEARCH
(2023)
Article
Paleontology
Cemile Solak
Summary: The study focuses on the distribution and taxonomy of orbitolinid foraminifera in the upper Aptian sequence in the Geyik Dagi area of Central Taurides, revealing three new species and conducting a taxonomic review and morphological analysis. The presence of these species helps to clarify the taxonomic differences among them.
PALAEONTOGRAPHICA ABTEILUNG A-PALAOZOOLOGIE-STRATIGRAPHIE
(2021)
Article
Geology
Felix Schlagintweit, I. Ioan Bucur
Summary: New data from eastern Serbia shows that several genera of the Orbitolinidae explosively appeared in the late Berriasian, contradicting previous age references. The early evolutionary history of the Orbitolinidae is considered a classic example of adaptive radiation within the clade's history.
CARNETS DE GEOLOGIE
(2021)
Article
Biology
Felix Schlagintweit
Summary: This study focuses on the Lower to mid-Cretaceous Tibetan Orbitolinidae, which exhibits a high diversity and complex embryo structures. However, the taxonomy of Orbitolina pileus needs to be reconsidered, as the original images actually represent a mixture of an unidentified high-conical mesorbitolinid species and a section of Palorbitolinoides orbiculatus. The nomenclatural act reclassifies P. orbiculatus as a junior synonym of O. pileus and designates a lectotype. The study utilizes data from the literature and material collected from the Albian Langshan Formation in the northern Lhasa Block of Tibet.
HISTORICAL BIOLOGY
(2023)
Article
Paleontology
Felix Schlagintweit
Summary: This article discusses a small-sized orbitolinid fossil that was originally reported as Coskinolinoides cf. texanus Keijzer and later described as the new species Paracoskinolina fleuryi Decrouez and Moullade. However, its internal test structure does not match the characteristics of the genus Paracoskinolina Moullade emend. Arnaud-Vanneau. The original generic assignment is re-instated, but its complex marginal zone does not fit the description of Coskinolinoides texanus from Texas. The newly named species Coskinolinoides fleuryi (Decrouez and Moullade) comb. nov. has a broad and dispersed geographical distribution and spans the Late Aptian-Albian to early Cenomanian interval. Despite this contribution, there are still additional species in the genus Paracoskinolina that require taxonomic revision.
REVUE DE MICROPALEONTOLOGIE
(2023)
Article
Geography, Physical
Victor M. Giraldo-Gomez, Maria Rose Petrizzo, Gabriele Gambacorta, Cinzia Bottini, Silvia E. Gilardoni, Elisabetta Erba
Summary: The benthic foraminiferal assemblages from the Scaglia Bianca Formation in Italy provide a detailed record of faunal changes during the Oceanic Anoxic Event 1d (OAE 1d). Integration of different proxies allows reconstruction of water conditions during this event. Prior to OAE 1d, stable mesotrophic conditions were observed. During OAE 1d, there was an increase in infaunal taxa suggesting mesotrophic conditions and hypoxic/anoxic conditions in bottom waters. After OAE 1d, there was a restoration of oxygen conditions and continued mesotrophic regime in bottom waters.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geology
Felix Schlagintweit, David Gercar, Bostjan Rozic
Summary: A mixed assemblage of planktonic and benthonic foraminifera has been found in the Lower Flyschoid Formation in the western part of the Slovenian Basin. These findings provide valuable insights into the biostratigraphy and paleogeographic configuration of the region during the Early to Middle Cretaceous.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Jerali Rodrigo, Felix Schlagintweit
Summary: In this study, the occurrence of orbitolinids in the Tuburan Limestone from Cebu Island, Central Philippines, was reported and their ages were determined more accurately through taxonomic analysis. The results showed that the Tuburan Limestone is of late Aptian age. Additionally, the study found a scarcity of Lower Cretaceous dictyoconids in the Tuburan Limestone, which may be attributed to the absence of suitable environmental conditions. A model was proposed to explain the formation process and geological history of the Tuburan Limestone.
CARNETS DE GEOLOGIE
(2022)
Article
Geochemistry & Geophysics
Renier Viltres, Sigurjon Jonsson, Abdulaziz O. Alothman, Shaozhuo Liu, Sylvie Leroy, Frederic Masson, Cecile Doubre, Robert Reilinger
Summary: The study of the present-day motion and internal deformation of the Arabian plate reveals its overall rigidity and minimal internal deformation, with localized strain likely due to anthropogenic activities and possible subsurface magmatic processes near its western margin.
Article
Environmental Sciences
Dharmendra Pratap Singh, Rajeev Saraswat, Rahul Pawar
Summary: This study examines the morphology of benthic foraminifera and its relationship with ambient environmental parameters in the southeastern Arabian Sea. The results show that different environmental conditions lead to variations in the morphology of benthic foraminifera, and they can be used as indicators for reconstructing paleoenvironments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Gerta Keller, Madan L. Nagori, Maya Chaudhary, A. Nallapa Reddy, B. C. Jaiprakash, Jorge E. Spangenberg, Paula Mateo, Thierry Adatte
Summary: The Narmada Seaway in India originated during a global sea-level rise and Oceanic Anoxic Event 2 (OAE2). By analyzing fossils and sediment records, the historical development and environmental changes during the transgression were revealed.
Review
Geology
Michael D. Bidgood, Michael D. Simmons
Summary: Cenomanian planktonic foraminifera are important for biostratigraphic correlation and calibration to the geological timescale, but their utility is hindered by ambiguity in age calibration, taxonomic identity, and association with other fossil groups. A simple scheme for low to mid latitudes can provide unambiguous correlation and age calibration.
NEWSLETTERS ON STRATIGRAPHY
(2022)
Article
Geology
Jimmy de Rooij, Sybrand A. N. Lucassen, Charlotte Furer, Anne S. Schulp, P. Martin Sander
Summary: This study presents a detailed osteohistological analysis on Triceratops horridus and Triceratops cf. prorsus specimens, aiming to understand the growth and development of ceratopsids. The analysis reveals a distinct pattern of bone tissue growth in Triceratops limb elements, but also suggests that taxonomic ambiguity between Torosaurus and Triceratops cannot be solely resolved based on histological data.
CRETACEOUS RESEARCH
(2024)
Review
Geology
J. R. Ovando-Figueroa, J. A. Moreno-Bedmar, M. Company, J. A. Jacobo-Delgado
Summary: This article presents a review of ammonoid specimens from the Berriasian and Valanginian age in Zacatecas, Mexico. The study includes updated museographic information, new images, and 3D models of the specimens. Taxonomic identification has revealed six species and two genera. Stratigraphic range data suggests that the specimens belong to the uppermost upper Berriasian to lower Valanginian interval, with several biozones identified. Additionally, a paleobiogeographic analysis indicates a clear affinity with contemporaneous ammonoid assemblages from the Mediterranean region.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Jake Kotevski, Ruairidh J. Duncan, Adele H. Pentland, James P. Rule, Patricia Vickers-Rich, Thomas H. Rich, Erich M. G. Fitzgerald, Alistair R. Evans, Stephen F. Poropat
Summary: The cranial remains of non-avian theropod dinosaurs from the Cretaceous period in Australia are poorly understood. This study presents new evidence of non-mandibular cranial material, possibly belonging to the Megaraptoridae family, and contributes to the limited knowledge of Australian Cretaceous theropod cranial remains.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Josh Jenkins Shaw, Alexey Solodovnikov, Evgeny E. Perkovsky
Summary: A fossil of the monogeneric rove beetle subfamily Trichophyinae (genus Trichophya) has been discovered in the Upper Cretaceous Taimyr amber from northern Siberia. This finding indicates the morphological differences between ancient and modern Trichophya species groups. By comparing the morphology, distribution, and habitat requirements of extant species, the taxonomy, biogeography, and paleoecology of the Trichophya in Taimyr amber can be better understood.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Martin Kostak, Frank Wiese, Zuzana Kozlova, Adam Culka, Martin Mazuch, Martin Soucek
Summary: A well-preserved fossil of an upper Cretaceous acanthoceratoid ammonite has been discovered in the Bohemian Cretaceous Basin, providing important insights into the jaw anatomy of these extinct organisms.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Gustavo Santiago, Marcelo de Araujo Carvalho, Renato Rodriguez Cabral Ramos, Sandro Marcelo Scheffler
Summary: The Santa Marta Formation in the Antarctic Peninsula is an important sedimentary sequence that provides insights into paleoenvironmental changes. The distribution of sedimentary organic matter reveals three distinct palynofacies associations and shows a progressive transgression from terrestrial to marine environments.
CRETACEOUS RESEARCH
(2024)
Article
Geology
B. J. Vazquez, D. Castanera, B. Vila
Summary: In Europe, the fossil record of sauropods in the uppermost Cretaceous is mainly found in Spain, France, and Romania. Recently, a significant discovery of titanosaurs' teeth was made in Els Nerets, Spain, which contains the largest tooth sample from the Late Cretaceous in Europe. The teeth show distinct characteristics but cannot be attributed to any known European species. Based on tooth morphology and wear facets distribution, a new taxon is proposed.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Youssef S. Bazeen, Walid G. Kassab, El Sayed M. Moneer, Gebely A. Abu El-Kheir, Mohamed K. Abdelgawad, Haitham M. Ayyad
Summary: This study investigates the Maastrichtian-Danian succession in the Abu Minqar section of the Western Desert of Egypt, using an integrated analysis of biostratigraphy and chemostratigraphy. The results suggest that regional tectonics played a substantial role in the depositional history and paleoenvironmental circumstances of the southern Tethys margin.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Fernando R. Rios, Ana M. P. Mizusaki, Rualdo Menegat, Isaque C. Rodrigues
Summary: This study examines the temporal and spatial relationships between fluvio-aeolian, aeolian, and volcanic systems in the southernmost part of the Parana Basin during the Late Jurassic and Early Cretaceous. By analyzing facies and architectural elements, the evolution of the volcano-sedimentary record is reconstructed.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Antonio M. Casas, Arsenio Munoz, Alberto Tella, Carlos L. Liesa
Summary: This work proposes the application of magnetic surveying to study the cyclicity in sedimentary basins. Through measuring the total magnetic field and vertical magnetic gradient, the short-wavelength magnetic anomalies associated with the sedimentary sequence can be analyzed, providing information about the magnetic susceptibility and magnetic remanence of different sedimentary units. The cyclostratigraphic analysis reveals the existence of various cycles and enables the dating of the basin fill, offering new constraints for basin evolution.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Ottilia Szives, Josep A. Moreno-Bedmar, Beatriz Aguirre-Urreta, Miguel Company, Camille Frau, Mikel Lopez-Horgue, Antoine Pictet, Izabela Ploch, Christian Salazar, Ricardo Barragan, Jean -Louis Latil, Jens Lehmann, Stephane Reboulet, Emmanuel Robert
Summary: The 7th meeting of the IUGS Lower Cretaceous Ammonite Working Group discussed important changes in the geological age classification, including adjustments and improvements to the upper Tithonian-Berriasian, upper Aptian, and Albian stages. The meeting also discussed the Valanginian and Hauterivian stages, and provided discussions on zonal indices and units, emphasizing the use of interval zones and subzones.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Felix Schlagintweit, David Gercar, Bostjan Rozic
Summary: A mixed assemblage of planktonic and benthonic foraminifera has been found in the Lower Flyschoid Formation in the western part of the Slovenian Basin. These findings provide valuable insights into the biostratigraphy and paleogeographic configuration of the region during the Early to Middle Cretaceous.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Arkaprava Mukhopadhyay, Debarati Chattopadhyay, Arghya Poddar, Ranita Saha, Sachin Patil, Tushar Sonkar, Sujoy Das, Rudranil Basak, Shubhabrata Paul, Arindam Roy
Summary: Predator-prey interaction exerts significant selection pressure on the evolutionary pathways of both parties. This research presents a new dataset of gastropod drilling predation on molluscan prey from the Upper Cretaceous, highlighting the influence of drilling predation during this period. The study utilizes a hybrid method of surface sampling without physically breaking the host rock. Findings suggest that drilling predation was an established form of predation during the Late Cretaceous, yet remains understudied.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Dany Azar, Andre Nel
Summary: Lebanoaktassia curiosa is a new genus and species of strange dragonfly, representing the first Gondwanan species of the family Aktassiidae. It was found in Hjoula, Lebanon, along with two endemic dragonfly families, suggesting a possible connection to an island insular system in the Early Cretaceous.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Pablo M. Villegas, A. Martin Umazano, Marcelo Krause, Mariana Brea
Summary: Conifer fossil woods from the Campanian Puntudo Chico Formation were studied, confirming the presence of Brachyoxylon currumillii and the introduction of Cupressinoxylon sp. cf. C. artabeae in the formation. The new specimens of Podocarpoxylon mazzonii suggest that this taxon is common in the Cretaceous to Eocene floristic assemblages. The growth-ring analysis of these fossil trees indicates their development under temperate and humid conditions, with slight sensitivity from year to year and a terminal event representing a cessation or retardation of cambial activity. Other paleoclimatic proxies suggest a temperate-warm and humid depositional environment with some semi-arid events in the Puntudo Chico Formation.
CRETACEOUS RESEARCH
(2024)