Article
Geography, Physical
Roger M. H. Smith, Jennifer Botha, Pia A. Viglietti
Summary: This study presents sedimentological and taphonomic evidence to support the hypothesis of drought-induced mass death of tetrapods in the earliest Triassic strata of the southern Karoo Basin. The analysis of in-situ fossils reveals the presence of numerous articulated Lystrosaurus skeletons, suggesting that they died during periods of drought and starvation. The study also provides insights into the environmental conditions and evolutionary impact of these episodes of mass death.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geography, Physical
Jun Liu, Kenneth D. Angielczyk, Fernando Abdala
Summary: The narrow active temperature ranges of ectothermic tetrapods can be used to reconstruct paleoclimates. By studying the known geographic distributions, critical thermal limits, and other paleoclimate information, we can deduce the climatic preferences of different tetrapod groups. In the Triassic period, major archosauromorphs preferred higher temperatures, while Lystrosaurus preferred lower temperatures.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Paleontology
Tiane M. De-Oliveira, Leonardo Kerber, Marco Aurelio Gallo De Franca, Felipe L. Pinheiro
Summary: The study describes the first conclusive archosauriform records from the Lower Triassic of Brazil, shedding light on the evolution and diversification of archosauriforms in the early stages.
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2021)
Article
Paleontology
Heitor Francischini, Paula Dentzien-Dias, Francesco Battista, Gabriel S. Sipp, Tomaz P. Melo, Claiton M. S. Scherer, Cesar L. Schultz
Summary: This study describes the presence of various types of burrows preserved in aeolian strata of the Permo-Triassic Buena Vista Formation in southern Brazil. The morphology of these burrows is similar to those found in other parts of the world. Possible producers of these burrows include dicynodonts, cynodonts, therocephalians, and/or procolophonians based on size compatibility and adaptations for digging in Permo-Triassic tetrapods. Furthermore, the study discusses the behavior of the burrow producers based on the presence of passive filling and bilobate bottoms in the tunnels.
PAPERS IN PALAEONTOLOGY
(2023)
Article
Biodiversity Conservation
Adriana Cecilia Mancuso, Elena Previtera
Summary: This study investigates bone diagenesis in the Middle Triassic Tarjados Formation of western Argentina to understand past environmental and climatic conditions. The results suggest changes in sediment supply and seasonal soil moisture fluctuations indicative of a semi-arid climate. The integration of sedimentology and bone diagenesis reveals a local rain-shadow effect in the study area.
PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS
(2022)
Article
Geosciences, Multidisciplinary
Moaz Salih, John J. G. Reijmer, Ammar El-Husseiny
Summary: This study investigates the controls and variations in petrophysical properties and acoustic velocities of Khuff carbonates. The results show that pore types, mainly of diagenetic origin, are the main factor controlling variations of velocity at any given porosity. Three main diagenetic processes contribute to the evolution of velocity and porosity in the Khuff carbonates, providing important insights about reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geography, Physical
Ruoyu Bai, Haijun Song, Michael J. Benton, Li Tian
Summary: This study presents a cladistic analysis of Early Triassic conodonts to reexamine the systematic classification and evolutionary relationships of the families Anchignathodontidae, Ellisonidae, and Gondolellidae. The results support the reassignment of Ellisonia agordina and Neospathodus planus, and suggest potential changes in the classification of Parafurnishius and Furnishius. The cladogram provides a solid phylogenetic foundation for further investigation of conodont systematic classification and evolutionary rates during the Early Triassic.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Multidisciplinary Sciences
Xueqian Feng, Zhong-Qiang Chen, Michael J. Benton, Chunmei Su, David J. Bottjer, Alison T. Cribb, Ziheng Li, Laishi Zhao, Guangyou Zhu, Yuangeng Huang, Zhen Guo
Summary: The Permian-Triassic mass extinction caused a severe decline in biodiversity, and information on soft-bodied animals comes from trace fossils. Analysis of trace fossils revealed that infaunal ecologic structure was established in the early Smithian period. The decoupling of diversity between deposit feeders and suspension feeders in carbonate ramp-platform settings may have delayed the recovery of nonmotile, suspension-feeding epifauna in the Early Triassic.
Article
Acoustics
Bernd Fritzsch, Karen L. Elliott
Summary: The hearing range of lampreys is similar to that of elasmobranchs, non-teleosts, and lungfish. Different organs are used for sound reception and gravistatic sensing in different species, with lungfish relying on the saccule for hearing. The basilar papilla is important for hearing in coelacanths and most tetrapods, and it generates pressure with the intracranial joint.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Biochemistry & Molecular Biology
Zhuo Feng, Sui Wan, Qun Sui, Conrad Labandeira, Yun Guo, Jianbo Chen
Summary: This article describes insect egg body fossils within ginkgophyte leaves from the Upper Triassic of China. Some of these eggs show feeding damage from a predatory insect. This provides exceptional evidence for the resource use of a host plant by an ovipositing insect and reveals the earliest-known tritrophic cascade.
Article
Multidisciplinary Sciences
Terry T. Isson, Shuang Zhang, Kimberly V. Lau, Sofia Rauzi, Nicholas J. Tosca, Donald E. Penman, Noah J. Planavsky
Summary: The disappearance of siliceous life during the end-Permian biotic crisis sustained extreme temperatures and led to a fundamentally altered carbon and silica cycle.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Yasuhisa Nakajima, Yasunari Shigeta, Alexandra Houssaye, Yuri D. Zakharov, Alexander M. Popov, P. Martin Sander
Summary: This study describes the fossils of Ichthyopterygia reptiles found in the early Spathian stage in South Primorye, Russian Far East. The fossils represent a basal ichthyopterygian and a humerus of an ichthyopterygian, suggesting rapid diversification and high aquatic adaptation in Ichthyopterygia after the end-Permian mass extinction.
SCIENTIFIC REPORTS
(2022)
Article
Geography, Physical
C. E. Bennett, T. Kearsey, S. J. Davies, M. J. Leng, D. Millward, T. R. Smithson, P. J. Brand, M. A. E. Browne, D. K. Carpenter, J. E. A. Marshall, H. Dulson, L. Curry
Summary: The Ballagan Formation in northern Britain preserves a record of Early Mississippian ecosystems, characterized by diverse lithofacies and abundant fossils. The formation shows evidence of mixed salinity waters and marine influence decreasing over time, creating a complex environmental mosaic of lakes, rivers, and floodplains. This environment provided a habitat for various organisms to recover from the Hangenberg Crisis and transition between marine and freshwater environments.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Engineering, Chemical
Zhangming Hu, Mingyi Hu
Summary: This study focuses on the Triassic Baikouquan Formation reservoir in the Mahu Depression of the Junggar Basin. The research investigates the geological characteristics, pore structure characteristics, and clay mineral characteristics of the reservoir using X-ray diffraction and scanning electron microscopy. Additionally, the study explores the sensitivity of velocity, water, salt, and stress in the reservoir through a sensitive flow test.
Article
Zoology
M. K. Struble, A. C. Gibb
Summary: Walking is a form of locomotion where forward propulsion comes from the appendages interacting with the ground. A key characteristic of walking is the out-of-phase movement of limbs within the same girdle and the presence of at least one limb acting as ground support. Biomechanical parameters such as stance duration, cycle frequency, and cycle distance differentiate walking from other gaits but may also be used to describe non-walking gaits. Further research is needed to understand the kinetics of quadrupedal movements and the movements of small, ecothermic tetrapods.
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2022)
Article
Evolutionary Biology
Blair W. McPhee, Jonathas S. Bittencourt, Max C. Langer, Cecilia Apaldetti, Atila A. S. Da Rosa
JOURNAL OF SYSTEMATIC PALAEONTOLOGY
(2020)
Article
Biology
Dilson Vargas-Peixoto, Cicero Schneider Colusso, Atila Augusto Stock Da-Rosa, Leonardo Kerber
Summary: The article reports a new specimen of a ground sloth species found in Quaternary deposits in southern Brazil, contributing to the understanding of the skeletal anatomy of Lestodon armatus and the diversity of extinct mammalian fauna in southern Brazil.
HISTORICAL BIOLOGY
(2021)
Article
Geology
Gabriel Bertolini, Juliana C. Marques, Adrian J. Hartley, Atila A. S. Da-Rosa, Claiton M. S. Scherer, Miguel A. S. Basei, Jose C. Frantz
Article
Multidisciplinary Sciences
Tiane M. De-Oliveira, Felipe L. Pinheiro, Atila Augusto Stock Da-Rosa, Sergio Dias-Da-Silva, Leonardo Kerber
Article
Biology
Agustin G. Martinelli, Juan A. Escobar, Heitor Francischini, Leonardo Kerber, Rodrigo T. Mueller, Rogerio Rubert, Cesar L. Schultz, Atila. A. S. Da-Rosa
Summary: This study describes four dorsal vertebrae of a single individual referred to cf. Jachaleria candelariensis from a site in Rio Grande do Sul, Brazil. The find likely represents the second record of the genus in the Triassic of Brazil. The paper also discusses the faunal composition and relative age of the sites in the Riograndia Assemblage Zone.
HISTORICAL BIOLOGY
(2021)
Article
Evolutionary Biology
Mauricio S. Garcia, Rodrigo T. Muller, Flavio A. Pretto, Atila A. S. Da-Rosa, Sergio Dias-Da-Silva
Summary: This study reevaluates a dinosaur specimen from southern Brazil, known as the 'Big Saturnalia', and finds it to have herrerasaurid affinities, making it one of the largest herrerasaurid specimens from the Candelaria Sequence. This specimen, with cranial and postcranial elements, offers new insights into the anatomy, evolution, and distribution of Herrerasauridae. Its large size further supports herrerasaurids as top-tier predators during the early stages of dinosaur evolution in southwestern Pangaea.
JOURNAL OF SYSTEMATIC PALAEONTOLOGY
(2021)
Article
Biology
Taluany Silva do Nascimento, Aline Lopes dos Santos, Debora Ulisses Lima, Etiene Fabbrin Pires Oliveira, Atila Augusto Stock Da-Rosa
Summary: This study provides important evidence for understanding the ancient climate and vegetation in the Abuna Basin of Brazil, while also expanding the geographic distribution of these families in the Amazon region.
HISTORICAL BIOLOGY
(2021)
Article
Paleontology
Felipe L. Pinheiro, Eduardo Silva-Neves, Atila A. S. Da-Rosa
Summary: Procolophonoidea was the only parareptile clade to survive the end-Permian mass extinction, and they experienced a major adaptive radiation during the Triassic. The new procolophonid genus and species, Oryporan insolitus gen. et sp. nov., combines typical adaptations suggestive of herbivory with primitive character states peculiar to early procolophonoids, making it the phylogenetically earliest species to show apparent adaptations for herbivory. This highlights the diversity of feeding habits displayed by Early Triassic procolophonoids, crucial for the clade's survival in post-extinction disaster communities.
PAPERS IN PALAEONTOLOGY
(2021)
Article
Anatomy & Morphology
Gabriel Mestriner, Aaron LeBlanc, Sterling J. Nesbitt, Julio C. A. Marsola, Randall B. Irmis, Atila Augusto Stock Da-Rosa, Ana Maria Ribeiro, Jorge Ferigolo, Max Langer
Summary: Histological data show that silesaurids do not have the permanent gomphosis seen in crocodylians and dinosaurs, but instead exhibit delayed ankylosis, with teeth being suspended in sockets by a periodontal ligament before eventually mineralizing and fusing to the jaws. This suggests a paedomorphic trend in tooth attachment evolution, with possible convergence in the dinosaur and crocodylian gomphosis. The relative duration of different phases of dental ontogeny needs to be carefully considered when analyzing dental characters in early archosaur phylogenies.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Lisie Vitoria Soares Damke, Flavio Augusto Pretto, Bianca Martins Mastrantonio, Mauricio Silva Garcia, Atila Augusto Stock Da-Rosa
Summary: Loricata refers to a group of hypercarnivorous pseudosuchian archosaurs that were top predators in the Middle to Late Triassic ecosystems. Fossil records of this group are abundant in the lower portion of the Santa Maria Supersequence in southern Brazil, but become scarce or absent in subsequent units. Therefore, studying new specimens from these units is important. A new fragmentary specimen of Loricata from the lower Candelária Sequence is reported here, supporting its loricatan affinities through morphology and phylogenetic analysis.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Anatomy & Morphology
Rodrigo T. Mueller, Mauricio S. Garcia, Fabiula P. Bem, Lisie V. S. Damke, Andre O. Fonseca, Atila A. S. Da-Rosa
Summary: The evolution of sauropodomorph dinosaurs, including Unaysaurus tolentinoi, is revealed by the Triassic beds in Brazil. We discovered a fossil of an immature individual that shares characteristics with the holotype of U. tolentinoi but is smaller in size, indicating its incomplete development. This new fossil expands the fossil record of U. tolentinoi and represents an additional juvenile dinosaur from the Caturrita Formation.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2023)
Article
Paleontology
Gabriel Mestriner, Julio C. A. Marsola, Sterling J. Nesbitt, Atila Augusto Stock Da-Rosa, Max Langer
Summary: Recent discoveries and reassessments of silesaurids have provided insights into the origin and early evolution of dinosaurs and their relatives. However, these findings have been relatively limited in South America, a region that likely played a significant role in dinosaurian origins. This study describes disarticulated silesaurid remains from Brazil, providing new evidence of their presence during the Carnian period and suggesting a conservative anatomy among early dinosauromorphs.
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2023)
Article
Geography, Physical
Alexsander Trevisan, Ana Maria Ribeiro, Atila Augusto Stock Da-Rosa, Patricia Hadler
Summary: The translation part introduces the distribution of Pleistocene South American fossil ursids of the extinct genus Arctotherium, with a focus on the findings in Rio Grande do Sul, Brazil. By anatomical description and body mass estimation, the bones are confirmed to belong to Arctotherium sp. The age and lithological correlations are also discussed, indicating a non-synchronous evolution of the Uruguay River basin during the Late Pleistocene.
QUATERNARY INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
Voltaire D. Paes-Neto, Julia Brenda Desojo, Ana Carolina B. Brust, Cesar Leandro Schultz, Atila Augusto S. Da-Rosa, Marina B. Soares
Summary: Aetosauria is a clade of armored pseudosuchians, with some of its oldest members found in Brazil. A comparative analysis of the axial skeleton of Aetosauroides and Polesinesuchus revealed differences in diagnostic features, suggesting that the latter may be a junior synonym of the former. This study indicates that morphological variation related to ontogeny impacts aetosaur taxonomy and phylogeny by reducing the number of putative 'dwarf' aetosaurs.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)
Article
Multidisciplinary Sciences
Paula L. Copetti, Rodrigo Parisi-Dutra, Atila A. S. Da-Rosa, Leonardo Kerber
Summary: This contribution describes a new Pleistocene Tayassuidae fossil from northern Brazil, representing the first Pleistocene fossil of this group with stratigraphic provenance in the Amazon region. The specimen extends the past geographic distribution of peccaries in South America and contributes to the knowledge on the paleofauna of the Rio Madeira Formation.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)
