Article
Multidisciplinary Sciences
Benjamin F. Mohler, Andrew T. McDonald, Douglas G. Wolfe
Summary: Deinosuchus, a neosuchian animal, has been discovered in the Campanian formations in North America, with fossils found from New Jersey to Montana in the USA and as far south as Coahuila in Mexico. Fossils of Deinosuchus found in the Menefee Formation in New Mexico represent one of the earliest occurrences of this genus on the Laramidian subcontinent, with distinctively morphological osteoderms bearing similarities to those of Deinosuchus.
Article
Multidisciplinary Sciences
Andrew T. McDonald, Douglas G. Wolfe, Elizabeth A. Freedman Fowler, Terry A. Gates
Summary: Brachylophosaurini is a clade of hadrosaurid dinosaurs from the Campanian of western North America. Ornatops incantatus is a newly described brachylophosaurin from New Mexico, representing the southernmost occurrence of the clade with unique nasal-frontal suture morphology. A phylogenetic analysis places Ornatops in a trichotomy with Probrachylophosaurus and Brachylophosaurus.
Article
Geology
Nicolas R. Chimento, Federico L. Agnolin, Takanobu Tsuihiji, Makoto Manabe, Fernando E. Novas
Summary: This study describes gondwanatherian mammaliaforms from the Chorrillo Formation in Patagonia, Argentina, expanding our knowledge of this species.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Belal S. Salem, Patrick M. O'Connor, Eric Gorscak, Sanaa El-Sayed, Joseph J. W. Sertich, Erik Seiffert, Hesham M. Sallam
Summary: The discovery of Upper Cretaceous dinosaur fossils in the Western Desert of central Egypt adds to the limited record of dinosaurs in the region. The fossils include various types of dinosaurs, such as titanosaurian sauropods and non-avian theropods, indicating a diverse ecosystem supporting non-avian dinosaurs in Late Cretaceous North Africa.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Sebastian G. Dalman, Spencer G. Lucas, Steven E. Jasinski, Nicholas R. Longrich
Summary: The horned dinosaurs, known as Ceratopsidae, were a diverse family of herbivorous dinosaurs originating in western North America during the Late Cretaceous period. A new ceratopsid species, Sierraceratops turneri gen. et sp. nov., was discovered in the Upper Cretaceous Hall Lake Formation in south-central New Mexico, further supporting the hypothesis of endemic dinosaur fauna in southern Laramidia. Sierraceratops exhibits unique characteristics like short, robust postorbital horns and adds to the diversity of Chasmosaurinae in the Late Cretaceous.
CRETACEOUS RESEARCH
(2022)
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
Biology
Yuzheng Ke, Rui Wu, Darla K. Zelenitsky, Don Brinkman, Jinfeng Hu, Shukang Zhang, Haishui Jiang, Fenglu Han
Summary: This study identified a fossilized embryonic turtle preserved in an egg from the Upper Cretaceous of China, attributed to the extinct group Nanhsiungchelyidae. Despite habitat differences, nanhsiungchelyids and adocids shared reproductive traits such as thick eggshells, medium size clutches, and relatively large eggs.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Surgery
Femke Nawijn, Falco Hietbrink, Andrew B. Peitzman, Luke P. H. Leenen
Summary: Necrotizing Soft Tissue Infections (NSTIs) can present with a wide range of symptoms, from severe to subtle, leading to delays in diagnosis and treatment. Lack of awareness of this heterogeneity among physicians may result in preventable mortality.
FRONTIERS IN SURGERY
(2021)
Article
Geology
Jorge O. Calvo, Agustin Ramirez, Leonardo Salgado, Alejandro Otero
Summary: This study identifies and describes juvenile sauropod remains from the Upper Cretaceous Portezuelo Formation in Neuquen Province, Argentina. The fossils, including a femur and an anterior caudal vertebra, are classified as Titanosauria based on their general morphology. Despite the fragmentary condition of the material, these bones provide valuable insights into the immature stages of titanosaurs.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Ricardo Barragan, Josep A. Moreno-Bedmar, Fernando Nunez-Useche, Leon F. Alvarez-Sanchez, Gerard Delanoy
Summary: This study examined the ammonite record of two stratigraphic sections in Nuevo Leon State, northeast Mexico, aiming to develop an independent ammonite zonation for the Central Atlantic Province. The study identified three ammonite zones and one subzone, and introduced methodologies such as semi-quantitative biostratigraphy and the use of 3D models. The research also discussed the lower/upper Aptian transition in Mexico and Europe, proposing study options for better characterizing the transition and its correlation between the two regions.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Ivan T. Kuzmin
Summary: The Late Cretaceous is a crucial period for the understanding of the origins and diversification of crocodylians. However, the fossil record of crocodylians in the early Late Cretaceous is limited. This study reviews the known material of long-snouted crocodyliforms from the Upper Cretaceous of Central Asia and confirms the validity of the enigmatic taxon Zholsuchus procerus. The findings suggest that the origin of crown-group crocodylians may be much earlier than previously recognized.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Tamaki Sato, Katsuhisa Nagai, Hiroki Echizenya, Tatsuya Shinmura, Yoshinori Hikida, Yuji Soeda
Summary: This article describes/re-describes four indeterminate pliosaurid remains found in the Cenomanian and Turonian of the Yezo Group in Hokkaido, northern Japan. Although fragmentary, two specimens represent large individuals with skull sizes comparable to Megacephalosaurus from North America. The late Turonian age of the youngest specimen suggests that the Pliosauridae survived in the Pacific region until the clade was nearing extinction. Together with the known distributions of Elasmosauridae and Polycotylidae in the Japanese Cretaceous, the described pliosaurid specimens demonstrate that all three major plesiosaurian clades crossed the Cenomanian-Turonian boundary in this region.
CRETACEOUS RESEARCH
(2023)
Article
Geology
A. Cabezuelo Hernandez, A. Bolet, A. Torices, A. Perez-Garcia
Summary: Appendicular remains of squamate reptiles are rarely described in the fossil record due to their low preservational potential and diagnostic information. A study of an unpublished fossil specimen from Spain revealed it to be a possible member of Varaniformes, one of the largest Mesozoic terrestrial lizards in Europe.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Matias Soto, Felipe Montenegro, Valeria Mesa, Daniel Perea
Summary: This study presents sauropod remains from Upper Cretaceous deposits in Uruguay, with fossils from the Mercedes Formation and Asencio Formation showing different affinities and characteristics. The phylogenetic analysis supports a Late Cretaceous age for the Asencio Formation, confirming the biochron of the Campanian-Maastrichtian tribe.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Liping Dong, Yuan Wang, Susan E. Evans
Summary: A new genus and species of fossil lizard, Moqisaurus pulchrum gen. et sp. nov., has been reported from the Early Cretaceous Moqi Fauna of eastern Inner Mongolia, China. This new lizard differs from other Jurassic and Cretaceous taxa in several morphological characteristics and shows a possible relationship with Liushusaurus from the Jehol Biota. The discovery of a well-preserved pectoral girdle in the new lizard provides the earliest fossil record of a mesosternal fontanelle and suggests early fusion of the paired mesosternal rods in squamate evolution.
CRETACEOUS RESEARCH
(2023)
