Article
Geology
Alexander O. Averianov, Stepan V. Ivantsov, Sergey V. Leshchinskiy, Pavel P. Skutschas
Summary: A fragment of wing metacarpal found in West Siberia, Russia, is very similar to the wing metacarpal of the dsungaripterid pterosaur found in Northwest China. This discovery represents the first pterosaur postcranial bone found in the Lower Cretaceous Ilek Formation of West Siberia and the first record of the Dsungaripteridae in Russia.
CRETACEOUS RESEARCH
(2022)
Article
Energy & Fuels
Yunong Wu, Hongqi Yuan, Yinghua Yu, Shanshan Zhang, Weibin Ruan
Summary: This study discusses the atypical Gilbert-type delta deposition of the Damoguaihe Formation, characterized by mudstone-dominated foresets. It emphasizes the importance of understanding the depositional properties for hydrocarbon exploration and highlights the potential exploration risks posed by fine-grained lithologic aspects.
Article
Geosciences, Multidisciplinary
Waqar Ahmad, Murray K. Gingras
Summary: This study characterizes the depositional environments of the Lower Cretaceous Wabiskaw Member using sedimentology and ichnology. It identifies four sedimentary facies associations and their corresponding ichnofacies, providing insights into the wave-influenced nearshore settings during that time period.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Energy & Fuels
Penglin Zhang, Qingtao Meng, David Misch, Reinhard F. Sachsenhofer, Zhaojun Liu, Fei Hu, Lin Shen
Summary: Lacustrine oil shale in the Beipiao Basin was characterized by the presence of well-preserved fossils, with organic matter primarily sourced from phytoplankton and aquatic algal-bacterial organisms. High-quality oil shales were deposited under anoxic freshwater conditions, with low terrigenous detrital input, indicating a warm and humid paleoclimate.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Li Li, Lian Jiang, Simon C. George, Zhaojun Liu
Summary: The analysis of aromatic compounds in lacustrine sediment samples from the Jiufotang Formation in the Chaoyang Basin revealed different characteristics in terms of environmental, maturity, and source-related parameters, indicating variations influenced by sedimentary environment, early productivity, and organic matter sources.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geology
Zewei Wang, Yun Xu, Qiaojing Zhao, Minmin Zhang, Weixu Li, Balaji Panchal, Bangjun Liu
Summary: Wildfires played a significant role in the climate and vegetation evolution during the Cretaceous greenhouse period. The study of peatland wildfires in the Lower Cretaceous Damoguaihe Formation revealed frequent occurrence of wildfires, dominated by low-temperature fires. The vertical variation of combustion products indicated changes in frequency and intensity of wildfires during deposition. The presence of angiosperm-derived charcoal suggests adaptation of angiosperms to the harsh peatland environment. © 2023 Elsevier Ltd. All rights reserved.
CRETACEOUS RESEARCH
(2023)
Article
Geology
Han Sang Yoon, Yuong-Nam Lee, Seung-Ho Jung, Dal-Yong Kong, Su-Hwan Kim, Minyoung Son
Summary: A new dinosaur tracksite containing footprints of non-adult ornithopods was discovered in South Korea in 2018. The footprints suggest gregarious behavior and the absence of adult tracks, indicating a potential spatial segregation of age groups in ornithopod populations.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Masaki Matsukawa
Summary: This study describes twenty Aptian ammonite species, including one new genus and three new species, from the Todai Formation in central Japan. The ammonite fauna of the Todai Formation is divided into one horizon and two biostratigraphic zones, which are correlated with Upper Aptian standard zonation in various regions. The fauna includes ornate planispiral forms, smooth or weakly ornate planispiral forms, and heteromorph forms, with a nearly even ratio of morphotypes similar to the Aketo Formation in the Miyako Group.
CRETACEOUS RESEARCH
(2021)
Article
Entomology
Jialiang Zhuang, Alexandr P. Rasnitsyn, Chungkun Shih, Dong Ren, Mei Wang
Summary: The study describes a new genus and three new species of Pamphiliidae insects, expanding the diversity of Pamphiliidae in the Mesozoic and enhancing our understanding of venation variation. The new findings revise the diagnostic characteristics of Juralydinae and contribute to our knowledge of wing venation characteristics of fossil pamphiliids.
Article
Geosciences, Multidisciplinary
Patrick M. Sullivan, Stephen A. Sonnenberg, Brian T. Hankins, James W. Hagadorn
Summary: This study addresses the uncertainties regarding the depositional environments, stratigraphic correlations, and paleo-geographic evolution of the Skull Creek Formation. Through the integration of sedimentological and geochemical data from cores and well logs, this study provides a better understanding of the formation and its significance in the early Western Interior seaway. The formation is divided into three units, each representing a different stage in the paleogeographic evolution of the seaway.
Article
Geosciences, Multidisciplinary
Timothy G. Frauenfelder, Phil R. Bell, Tom Brougham, Joseph J. Bevitt, Russell D. C. Bicknell, Benjamin P. Kear, Stephen Wroe, Nicolas E. Campione
Summary: Dinosaur research in Australia has seen a revival in the past decade, leading to a better understanding of the mid-Cretaceous fauna. Ankylosaurs, a rare but significant group, have been found in various dinosaur formations across Australia. In this study, a partial ankylosaur skull was described from Queensland, Australia, which represents the oldest ankylosaurian material in the region. The skull was reconstructed using synchrotron radiation X-ray tomography, revealing the palatal anatomy of Australian ankylosaurs.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geology
Henan Guo, Yanchen Zhao, Huali Chang, Chungkun Shih, Dong Ren
Summary: This is a study on two new fossil species discovered in northeastern China. These two species belong to the extinct Mesozoic beetle family Lasiosynidae, and provide important information for understanding the evolution of this family.
CRETACEOUS RESEARCH
(2022)
Article
Geography, Physical
Milovan Fustic, Rajeev Nair, Andreas Wetzel, Raza Siddiqui, William Matthews, Raphael Wust, Manuel Bringue, Jagos Radovic
Summary: This study investigates intensely bioturbated sediments in the Lower Cretaceous McMurray Formation in Alberta, Canada, and finds that bioturbation can lead to the enrichment of zircon grains in low-energy depositional settings. This discovery has important implications for understanding the distribution of mineral content in sandstone and mudstone.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Alexander O. Averianov, Alexander Sizov, Dmitriy Grigoriev, Ekaterina B. Pestchevitskaya, Dmitriy D. Vitenko, Pavel P. Skutschas
Summary: This translation introduces the revised dinosaur assemblage from the Lower Cretaceous Murtoi Formation at Mogoito locality in Transbaikalia, Russia, including various types of dinosaur fossils. The discovered dinosaur species are most similar to those found at the Khuren Dukh locality in Mongolia.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Rilda C. Araripe, David H. Oliveira, Maria E. Tome, Renata Moura de Mello, Alcina M. F. Barreto
Summary: This study investigated the Aptian-lower Albian microfossil association in the Romualdo Formation in the Araripe Basin, northeastern Brazil, identifying nine species of foraminifera and five species of ostracods from various environments. Three assemblages were identified and their stratigraphic position was determined for each outcrop, suggesting different marine influences in the south-central versus southwestern portions of the basin. The presence of the foraminifera genus Agathammina indicates an affinity with the Tethyan fauna, leading to the conclusion that the marine ingression during the Aptian-Albian followed a north-northeast direction, reaching initially the south-central part of the basin.
CRETACEOUS RESEARCH
(2021)
Article
Biology
Thomas Martin, Alexander O. Averianov, Julia A. Schultz, Achim H. Schwermann, Oliver Wings
Summary: The Late Jurassic multituberculate assemblage from the Langenberg Quarry in Northern Germany includes various species such as Paulchoffatiidae indet. and Teutonodon langenbergensis. A new species, Cimbriodon multituberculatus, was also discovered within the paulchoffatiid line.
HISTORICAL BIOLOGY
(2021)
Article
Geology
Alexander O. Averianov, Alexey Lopatin
Summary: Ondogurvel alifanovi, a new species of alvarezsaurid, is described in this study. It differs from other alvarezsaurids in the complete fusion of metatarsals II and IV in the contact area. Phylogenetic analysis places Ondogurvel in a clade with Late Cretaceous Asian parvicursorines Xixianykus and Albinykus. Two morphological types of the parvicursorine carpometacarpus are recognized.
CRETACEOUS RESEARCH
(2022)
Article
Evolutionary Biology
Alexey V. Lopatin, Alexander O. Averianov
Summary: Asiapator onchin is a new genus and species of Apatemyidae based on a fossil dentary fragment from Mongolia, exhibiting unique dental characteristics distinct from other species. It likely evolved from North American immigrants.
JOURNAL OF MAMMALIAN EVOLUTION
(2022)
Article
Biology
Alexander O. Averianov, Alexey Lopatin
Summary: Khulsanurus magnificus is a newly described genus and species of alvarezsaurid dinosaur from the Late Cretaceous of Mongolia, with unique anatomical features that differentiate it from other members of the group. It shares similarities with Shuvuuia and is placed within the Parvicursorinae clade in a phylogenetic analysis.
HISTORICAL BIOLOGY
(2022)
Article
Paleontology
Alexander O. Averianov, Hans-Dieter Sues
Summary: A new alvarezsaurid theropod, Dzharaonyx eski, has been discovered in the Upper Cretaceous Bissekty Formation in Dzharakuduk, Uzbekistan. It possesses unique features, such as opisthocoelous posterior dorsal vertebrae and procoelous posterior caudal vertebrae with a longitudinal canal within the neural arch. The humerus structure is intermediate between two other alvarezsaurid species. Phylogenetic analysis suggests that Dzharaonyx belongs to the Parvicursorinae subfamily.
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2022)
Article
Biology
Alexander O. Averianov, Andrei S. Kurin
Summary: Bogolubovia orientalis, the first pterosaur taxon described from Russia, was initially misclassified as an azhdarchid but has now been reclassified as a pteranodontid. A second vertebra, also belonging to Bogolubovia, was discovered at the same locality. This finding confirms the validity of Bogolubovia as a distinct taxon and distinguishes it from other pteranodontids.
HISTORICAL BIOLOGY
(2023)
Article
Geology
Alexander O. Averianov, Alexander Sizov, Dmitriy Grigoriev, Ekaterina B. Pestchevitskaya, Dmitriy D. Vitenko, Pavel P. Skutschas
Summary: This translation introduces the revised dinosaur assemblage from the Lower Cretaceous Murtoi Formation at Mogoito locality in Transbaikalia, Russia, including various types of dinosaur fossils. The discovered dinosaur species are most similar to those found at the Khuren Dukh locality in Mongolia.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Alexander O. Averianov, Stepan V. Ivantsov, Sergey V. Leshchinskiy, Pavel P. Skutschas
Summary: A fragment of wing metacarpal found in West Siberia, Russia, is very similar to the wing metacarpal of the dsungaripterid pterosaur found in Northwest China. This discovery represents the first pterosaur postcranial bone found in the Lower Cretaceous Ilek Formation of West Siberia and the first record of the Dsungaripteridae in Russia.
CRETACEOUS RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Hans-Dieter Sues, Alexander Averianov, Brooks B. Britt
Summary: The Upper Cretaceous Bissekty Formation in Uzbekistan has yielded various non-avian theropod dinosaur remains, including a large dromaeosaurid and a neovenatorid carcharodontosaurian named Ulughbegsaurus uzbekistanensis. However, the classification of Ulughbegsaurus uzbekistanensis remains uncertain due to the lack of definitive diagnostic features. Furthermore, a giant dromaeosaurid and a medium-sized tyrannosauroid called Timurlengia euotica coexisted in the same formation.
GEOLOGICAL MAGAZINE
(2023)
Article
Zoology
Dmitri V. Logunov, Alexander O. Averianov
Summary: This paper presents a brief biography and scientific achievements of renowned Russian mammologist Alexei Vladimirovich Abramov (b. 1962) in relation to his 60th anniversary. The paper is supported by photos obtained from colleagues who personally know A.V. Abramov and from his family archive.
RUSSIAN JOURNAL OF THERIOLOGY
(2022)
Article
Geology
Alexander O. Averianov, Alexey Lopatin
Summary: Isolated sacrum fragments, manual ungual phalanges, and a third metatarsal from the Upper Cretaceous (Santonian) Yalovach Formation at the Kansai locality in Tajikistan, are similar to those elements in various dromaeosaurid theropods. They are identified as Kansaignathus sogdianus and further analysis confirms its position as the basalmost Asiatic velociraptorine. It is also the oldest known member of this clade in Asia and worldwide.
CRETACEOUS RESEARCH
(2023)
Article
Multidisciplinary Sciences
Alexander O. O. Averianov, Thomas Martin, Alexey V. V. Lopatin, Pavel P. P. Skutschas, Dmitry D. D. Vitenko, Rico Schellhorn, Petr N. N. Kolosov
Summary: Eutriconodonta are an important group of early crown mammals. Three eutriconodontan taxa are known from the Early Cretaceous Teete vertebrate assemblage in Russia, indicating a remarkable taxonomic diversity at this locality. The coexistence of two Gobiconodon species suggests a dispersal event from Asia to North America.
Article
Paleontology
Alexander O. O. Averianov, Alexey V. V. Lopatin
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2023)
Article
Geology
Pavel P. Skutschas, Veniamin V. Kolchanov, Alexander O. Averianov, Rico Schellhorn, Petr N. Kolosov, Marc E. H. Jones, Thomas Martin
Summary: This study examines isolated incomplete salamander dentaries from the Lower Cretaceous Teete locality in Yakutia, Eastern Siberia, Russia. The findings provide evidence of the existence of small-sized salamanders in high latitudes during the Mesozoic era. The dentaries exhibit distinct morphological features and a neurovascular system similar to that of small-sized non-karaurid salamanders from the Juro-Cretaceous period.
CRETACEOUS RESEARCH
(2023)
Article
Paleontology
Thomas Martin, Alexander O. Averianov, Julia A. Schultz, Achim H. Schwermann
JOURNAL OF VERTEBRATE PALEONTOLOGY
(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)
