Article
Geology
Paul M. Barrett, Joseph A. Bonsor
Summary: The Cambridge Greensand Member has produced a diverse fauna of terrestrial and marine tetrapods, with two dinosaur taxa 'Eucercosaurus tanyspondylus' and 'Syngonosaurus macrocercus' being re-described. These taxa, though lacking clear diagnostic features, suggest that iguanodontians were common components of the Cambridge Greensand tetrapod fauna.
CRETACEOUS RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Daniel Perez-Pinedo, Christopher McKean, Rod Taylor, Robert Nicholls, Duncan McIlroy
Summary: Charniodiscus is a distinctive and iconic species within the Ediacaran frondose taxa, with recent studies revealing morphological differences that set it apart from other frondose taxa, mainly characterized by its bifoliate conical fronds without a backing sheet.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Multidisciplinary Sciences
Stephen F. Poropat, Matt A. White, Tim Ziegler, Adele H. Pentland, Samantha L. Rigby, Ruairidh J. Duncan, Trish Sloan, David A. Elliott
Summary: The Snake Creek Tracksite in the Upper Cretaceous Winton Formation of Queensland, Australia, presents an important vertebrate ichnoassemblage, including the first sauropod tracks reported from eastern Australia. This site also preserves a small number of theropod and ornithopod tracks, as well as the first fossilised crocodyliform and possible turtle tracks reported from Australia.
Article
Multidisciplinary Sciences
Andres Santos-Cubedo, Carlos de Santisteban, Begona Poza, Sergi Meseguer
Summary: A new styracosternan ornithopod genus and species, Portellsaurus sosbaynati gen. et sp. nov., is described based on the right dentary of a single specimen from the Mirambell Formation in Spain. This new dinosaur species indicates a highly diverse assemblage of medium-to-large bodied styracosternan hadrosauriforms in the Iberian Peninsula during the Early Cretaceous period.
Article
Multidisciplinary Sciences
Minyoung Son, Yuong-Nam Lee, Badamkhatan Zorigt, Yoshitsugu Kobayashi, Jin-Young Park, Sungjin Lee, Su-Hwan Kim, Kang Young Lee
Summary: This study presents a new find of a Yamaceratops dorngobiensis fossil in the Eastern Gobi Desert, Mongolia. It is the first relatively complete skeleton and juvenile individual of this species. Through analysis, it was determined that the specimen was in an immature stage of development. This discovery is significant for understanding the evolution of ceratopsians.
Article
Evolutionary Biology
Stuart Pond, Sarah-Jane Strachan, Thomas J. Raven, Martin I. Simpson, Kirsty Morgan, Susannah C. R. Maidment
Summary: The Wealden Group in southern England is a deposition of rivers, floodplains, and lagoons during the Early Cretaceous. Two historically important ankylosaurs, Polacanthus and Hylaeosaurus, have been found in its deposits. A new genus and species of ankylosaur, Vectipelta barretti, were discovered in the Wessex Formation of the Isle of Wight, which suggests a complex pattern of faunal turnover in the Wealden Group. Vectipelta is not closely related to other known Wealden taxa but instead shares a clade with two Chinese ankylosaurs, indicating a complex pattern of dispersal during the Early Cretaceous.
JOURNAL OF SYSTEMATIC PALAEONTOLOGY
(2023)
Article
Geology
Thomas Beevor, Aaron Quigley, Roy E. Smith, Robert S. H. Smyth, Nizar Ibrahim, Samir Zouhri, David M. Martill
Summary: A new locality in southeastern Morocco exposes different stratigraphic sequences of the Kem Kem Group, with three vertebrate-bearing horizons dominated by dental remains of Spinosaurus and Onchopristis. The unusually high abundance of Spinosaurus teeth compared to remains of terrestrial dinosaurs suggests Spinosaurus was primarily aquatic.
CRETACEOUS RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Terry A. Gates, James P. Lamb
Summary: Diagnostic dinosaur fossils in the southeastern United States are rare, and those that preserve a large portion of a skeleton are even more precious. Lophorhothon atopus represents the oldest and most complete dinosaur in the region, and a new diagnosis of the taxon has been provided through reexamination of the holotype material and a new specimen.
CANADIAN JOURNAL OF EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
E. M. Bobrovnikova, F. Lhuillier, V. P. Shcherbakov, V. V. Shcherbakova, G. V. Zhidkov, I. E. Lebedev, B. Eid, V. E. Pavlov
Summary: We conducted a paleointensity survey on lava flows from the Okhotsk-Chukotka Volcanic Belt, and found that two lava flows during the Cretaceous Normal Superchron provided trustworthy results. The distribution of geomagnetic dipole moments during the Cretaceous Normal Superchron showed a slightly bimodal pattern, indicating different behavior in the geomagnetic field during this period.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Multidisciplinary Sciences
Lindsay E. Zanno, Terry A. Gates, Haviv M. Avrahami, Ryan T. Tucker, Peter J. Makovicky
Summary: Intensifying macrovertebrate reconnaissance and age-dating techniques in recent decades have provided a more detailed understanding of the impact of the Cretaceous Thermal Maximum on terrestrial ecosystems. A new early-diverging ornithopod, Iani smithi gen. et sp. nov., has been discovered in Utah, USA, adding to the knowledge of Cretaceous fauna. This finding confirms the coexistence of at least five neornithischian clades in the earliest Late Cretaceous terrestrial ecosystems of North America.
Article
Zoology
P. Cerretti, E. Morgulis, V. Michelsen, T. Pape
Summary: This article revises and annotates the nominal genera and species misidentified to family by A.Z. Lehrer, providing habitus photographs for all holotypes. New synonyms and new combinations are discovered in the Muscidae and Tachinidae families.
Article
Geography, Physical
Yitian Yin, Laiming Zhang, Xue Gu, Runsheng Yin, Yixiong Wen, Tianjie Jin, Chengshan Wang
Summary: This study reveals that the uppermost Cretaceous-lowermost Paleogene strata in the low-latitude Nanxiong Basin exhibit an extremely high mean annual terrestrial temperature, which may be attributed to the Deccan Traps volcanism and the extremely hot and arid regional climate.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Mohamad Bazzi, Benjamin P. Kear, Mikael Siversson
Summary: This study investigates the evolution of lamniform sharks in the mid-Cretaceous period using dental fossils. The research reveals stable morphological disparity and tooth size between the Albian and Cenomanian boundaries, but changes in the early Turonian. Additionally, the study correlates these changes with the recovery after Oceanic Anoxic Event 2.
Article
Geology
Alexander O. Averianov, Alexander Sizov, Pavel P. Skutschas
Summary: Tengrisaurus starkovi, a titanosaurian sauropod from the Lower Cretaceous of Asiatic Russia, exhibits new morphological details through the discovery of an additional anterior caudal vertebra. This finding suggests a wider distribution of the Colossosauria clade ancestors in Eurasia during the Early Cretaceous.
CRETACEOUS RESEARCH
(2021)
Article
Zoology
Jacqueline Heckenhauer, Ernesto Razuri-Gonzales, Francois Ngera Mwangi, Julio Schneider, Steffen U. Pauls
Summary: While DNA barcodes are commonly used in species descriptions, including the whole mitochondrial and nuclear genomes is rare. However, whole genome sequencing of holotypes provides on-going genetic characterization of representative specimens. In this study, a minimally invasive method was used to extract DNA from the type specimen of a recently described caddisfly species from the Democratic Republic of the Congo. Using a low-cost next generation sequencing strategy, the complete mitochondrial and draft nuclear genomes were obtained, providing important data for species descriptions and phylogenomic studies.
