Article
Geology
Rodrigo A. Otero, Mario E. Suarez
Summary: This study presents new material of ray-finned fishes from Upper Cretaceous strata in central Chile, including specimens of the genus Enchodus and teeth of Pachyrhizodus and indeterminate pachycormids. It provides a critical review of historical ray-finned fishes in the region and suggests that the latest Cretaceous actinopterygian diversity along the southeastern Pacific was more discrete and scarce than previously thought.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Rodrigo A. Otero
Summary: This research describes an isolated terminal caudal centrum of a mosasaur found in central Chile, which belongs to the Mosasaurinae and extends the local mosasaur diversity previously composed of tylosaurines and halisaurines. It also confirms the widespread distribution of mosasaurines in the Weddellian region prior to the K/Pg event.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Mohan A. Sonar, Gaurav K. Kadu, Dnyaneshwar Wayal
Summary: This study describes and illustrates eleven species of Onychocellidae from the sedimentary deposits of the Kallankurichchi Formation in the Cauvery Basin, South India. These findings provide insights into the thriving bryozoan fauna and the environmental conditions during a transgressional period characterized by shallow marine environment and low sedimentation rate.
CRETACEOUS RESEARCH
(2023)
Article
Geology
Anjali Kumari, Seema Singh, Ashu Khosla
Summary: This study focuses on the Upper Cretaceous palaeosols of the Lameta Formation in the Jabalpur region of Central India. Through geological, morphological, and geochemical investigations, various pedofeatures were identified, suggesting formation under tropical warm, humid conditions and supported by evidence of chemical weathering.
CRETACEOUS RESEARCH
(2021)
Article
Plant Sciences
Valeria S. Perez Loinaze, Ezequiel I. Vera, Damian Moyano-Paz, Marina D. Coronel, Makoto Manabe, Takanobu Tsuihiji, Fernando E. Novas
Summary: A palynological analysis of the Chorrillo Formation in Patagonia suggests a diverse record of continental vertebrates, invertebrates, and plants, indicating humid and warm climatic conditions during the Maastrichtian age.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2023)
Article
Biodiversity Conservation
Amane Tajika, Neil H. Landman, Hiromichi Koyasu, Amy Broussard, Lian Anderson, Kenji Ikuno
Summary: This study documents 24 specimens of Rhyncholites and 12 specimens of Conchorhynchs from the Upper Cretaceous Mount Laurel Formation in Delaware. Morphometric analysis reveals that some morphological parameters in Rhyncholites are correlated with size, and the specimens exhibit high intraspecific variation.
AMERICAN MUSEUM NOVITATES
(2023)
Article
Geology
Carolina Acosta Hospitaleche, Jose P. OGorman, Karen M. Panzeri
Summary: A fossil of a left ulna found in the southeastern margin of the Somun Cura Plateau, Chubut Province (Argentina) is suggested to belong to a possible new species of neornithine bird. This could be the first report of a neornithine bird from the La Colonia Formation if correctly identified.
CRETACEOUS RESEARCH
(2023)
Article
Multidisciplinary Sciences
John A. Chamberlain, Katja Knoll, Joseph J. W. Sertich
Summary: We have described the first dinosaur skeletal material from the marine Fox Hills Formation in western South Dakota. The findings include two theropod pedal phalanges, one recovered from Meade County and the other from Ziebach County. Based on comparisons with other theropods, the specimens are identified as pedal phalanges from large ornithomimids.
Article
Geosciences, Multidisciplinary
G. Daners, C. R. Amenabar, G. R. Guerstein, G. Veroslavsky
Summary: Palynological analysis of the uppermost Cretaceous and lowermost Palaeogene sediments in the Gaviotin well in Uruguay identified different marine sedimentary characteristics, which will assist in drilling and hydrocarbon exploration in the area.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geology
Magdalena Llorens, Valeria S. Perez Loinaze, Paula L. Narvaez, Alfredo M. Zelaya, Egly Perez Pincheira, Sergio Gorustovich
Summary: This study describes a palynological assemblage from the Yacoraite Formation in the Salta Basin of Argentina, which provides insights into the flora and fauna of the region during the late Cretaceous. The presence of specific taxa suggests a late Maastrichtian age for the palynoflora, and its transitional nature indicates a closer affinity to equatorial plant provinces. This fossil record is important for understanding the transition between low and high latitude floras and the pre-extinction floristic composition of the area.
CRETACEOUS RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Diego Sullivann de Jesus Alves, Francisco Sergio Bernardes Ladeira, Alessandro Batezelli
Summary: This study investigates the formation of argillic horizons in the Marilia Formation during the Maastrichtian in the Cretaceous period. The study analyzes various soil attributes, including macromorphological and micromorphological data, to understand the polygenetic processes involved. The results suggest that the presence of argillic horizons does not necessarily indicate wet conditions but is associated with changes in granulometry, macroaggregates-microaggregates, carbonate accumulation, and water table oscillation.
Article
Geology
Jared T. Voris, Darla K. Zelenitsky, Francois Therrien
Summary: Recent research has enhanced our understanding of the diversity and paleobiogeography of caenagnathids in North America. However, the late Maastrichtian caenagnathid record remains incomplete. This study describes three isolated elements of caenagnathids found in Alberta, Canada, providing evidence for the widespread occurrence of caenagnathids in North America during the last one million years of the Cretaceous.
CRETACEOUS RESEARCH
(2024)
Article
Geology
M. Sol Raigemborn, Sabrina Lizzoli, Damian Moyano-Paz, Augusto N. Varela, Daniel G. Poire, Valeria Perez Loinaze, Ezequiel Vera, Makoto Manabe, Fernando Novas
Summary: This study conducted a paleopedological analysis of the Chorrillo Formation in southern Patagonia, Argentina. The results show that the paleosols in this formation are rich in smectite and exhibit vertical and redoximorphic features. Paleobotanical remains and climate proxies indicate a temperate-warm and seasonally humid climate during the formation of these paleosols.
CRETACEOUS RESEARCH
(2023)
Article
Energy & Fuels
Oladotun Afolabi Oluwajana, Abraham Olatunji Opatola, Olajide Jonathan Adamolekun, Otobong Sunday Ndukwe, Gabriel Toluwalope Olawuyi, Collins Uche Ofiwe, Taiwo Ayodele Bolaji, Bamidele Adeniyi Adebambo, Oladipo Omoniyi Oluwajana
Summary: The study focuses on the sedimentology, palynology, and petroleum geochemistry of the Araromi Formation in the eastern Dahomey Basin, revealing that sedimentation occurred in fluvial and shallow-marine environments. The palynological assemblages suggest deposition in coastal through brackish water to shallow shelf environments with localized wind-induced storms. The poor source rock quality and immature organic matter in the shale and siltstone samples indicate limited hydrocarbon potential in the Araromi Formation.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
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
Evolutionary Biology
Christian Salazar, Wolfgang Stinnesbeck
JOURNAL OF SYSTEMATIC PALAEONTOLOGY
(2016)
Article
Geology
Eberhard Frey, Eric W. A. Mulder, Wolfgang Stinnesbeck, Christian Salazar, Luis Arturo Hector Quinzio-Sinn
CRETACEOUS RESEARCH
(2016)
Article
Geology
Huber A. Rivera, Jacobus P. Le Roux, L. Katherine Sanchez, Jorge E. Marino-Martinez, Christian Salazar, J. Carolina Barragan
SEDIMENTARY GEOLOGY
(2018)
Article
Paleontology
Wolfgang Stinnesbeck, Christina Ifrim, Christian Salazar
ACTA PALAEONTOLOGICA POLONICA
(2012)
Article
Geology
Sven N. Nielsen, Christian Salazar
CRETACEOUS RESEARCH
(2011)
Article
Geosciences, Multidisciplinary
Wolfgang Stinnesbeck, Eberhard Frey, Luis Rivas, Judith Pardo Perez, Marcelo Leppe, Christian Salazar Soto, Patricio Zambrano Lobos
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2014)
Article
Paleontology
Rodrigo A. Otero, Sergio Soto-Acuna, Frank Robin O'Keefe, Jose P. O'Gorman, Wolfgang Stinnesbeck, Mario E. Suarez, David Rubilar-Rogers, Christian Salazar, Luis Arturo Quinzio-Sinn
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2014)
Article
Geology
Christian Salazar, Wolfgang Stinnesbeck, Miguel Alvarez
CRETACEOUS RESEARCH
(2020)
Correction
Geology
Christian Salazar, Wolfgang Stinnesbeck, Miguel Alvarez
CRETACEOUS RESEARCH
(2020)
Article
Geography, Physical
Rafael Labarca, Erwin Gonzalez-Guarda, Alvaro Lizama-Catalan, Natalia A. Villavicencio, Jhonatan Alarcon-Munoz, Felipe Suazo-Lara, Pablo Oyanadel-Urbina, Paula Soto-Huenchuman, Christian Salazar, Sergio Soto-Acuna, Karina E. Buldrini
QUATERNARY SCIENCE REVIEWS
(2020)
Article
Geosciences, Multidisciplinary
Hermann Rivas, Christian Salazar, Wolfgang Stinnesbeck
Summary: The study focuses on the Toqui Formation in the Ayse'n-Rio Mayo Basin in central Patagonia, revealing 23 lithofacies and highlighting the complex evolution of its depositional environments.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geology
Hermann Rivas, Christian Salazar, Wolfgang Stinnesbeck
Summary: This study describes the lithofacies and microfacies of the Aysen-Rio Mayo Basin and reveals a cool-water environment. The sedimentary rocks in this basin consist mainly of mixed rocks with bioclasts and volcaniclastic debris, indicating a wave-influenced mixed ramp environment.