During the early two decades of third millennium, many Mesozoic and Cenozoic biotas belong to plesiosaur, Titanosauriformes, titanosaurs, theropods, Mesoeucrocodiles, pterosaur, bird, snake, fishes, mammals, eucrocodi...During the early two decades of third millennium, many Mesozoic and Cenozoic biotas belong to plesiosaur, Titanosauriformes, titanosaurs, theropods, Mesoeucrocodiles, pterosaur, bird, snake, fishes, mammals, eucrocodiles, invertebrates and plants from Pakistan were found. Previously a few were formally published according to nomenclatural rules. Most of the Mesozoic vertebrates were formally published in August 2021, and the remaining Mesozoic and Cenozoic biotas are being formally described here.展开更多
The maximum locomotor capabilities of theropod dinosaurs have long been a subject of considerable scholarly,primarily due to the lack of contemporary species for direct comparison.Biomechanical modeling and the analys...The maximum locomotor capabilities of theropod dinosaurs have long been a subject of considerable scholarly,primarily due to the lack of contemporary species for direct comparison.Biomechanical modeling and the analysis of dinosaur trackways have yielded significant theoretical insights into this area of research.This study investigates the running speed of a mid-sized theropod dinosaur trackway recently identified in the Otog region of Inner Mongolia,and it juxtaposes these findings with other running theropod trackways from diverse various global locations utilizing standardized inference methodologies.The results indicate that the trackmaker was capable of achieving a running speed of 45 or 41±4.9 km/h,thereby establishing it as the fastest-running theropod trackway documented from the Cretaceous period.Additionally,this paper reviews biomechanical investigations concerning the maximum running speeds of theropod dinosaurs and illustrates that the inferred speed of this midsized theropod aligns with the predictions of the majority of biomechanical models,thereby providing compelling new evidence to enhance our understanding of the locomotor capabilities of mid-sized theropods.展开更多
Multiple subparallel dinosaur trackways closely associated with a solitary theropod trackway occur in the Late Cretaceous deposits at Yugok-dong in Ulsan City,Korea.The trackway-bearing deposits are sheetflood deposit...Multiple subparallel dinosaur trackways closely associated with a solitary theropod trackway occur in the Late Cretaceous deposits at Yugok-dong in Ulsan City,Korea.The trackway-bearing deposits are sheetflood deposits and are well-lithified to preserve the footprints.The paleoenvironment of trackway deposits is interpreted as a lake margin where microbial mats formed under semi-arid paleoclimatic conditions.展开更多
文摘During the early two decades of third millennium, many Mesozoic and Cenozoic biotas belong to plesiosaur, Titanosauriformes, titanosaurs, theropods, Mesoeucrocodiles, pterosaur, bird, snake, fishes, mammals, eucrocodiles, invertebrates and plants from Pakistan were found. Previously a few were formally published according to nomenclatural rules. Most of the Mesozoic vertebrates were formally published in August 2021, and the remaining Mesozoic and Cenozoic biotas are being formally described here.
基金supported by the National Natural Science Foundation of China(Grant No.42288201)the Education Department of Liaoning Province(Grant No.JYTQN2023424)+1 种基金the Fundamental Research Funds for the Liaoning Universities(Grant No.LJ202410166028)the Otog Local Cooperation Project Funding。
文摘The maximum locomotor capabilities of theropod dinosaurs have long been a subject of considerable scholarly,primarily due to the lack of contemporary species for direct comparison.Biomechanical modeling and the analysis of dinosaur trackways have yielded significant theoretical insights into this area of research.This study investigates the running speed of a mid-sized theropod dinosaur trackway recently identified in the Otog region of Inner Mongolia,and it juxtaposes these findings with other running theropod trackways from diverse various global locations utilizing standardized inference methodologies.The results indicate that the trackmaker was capable of achieving a running speed of 45 or 41±4.9 km/h,thereby establishing it as the fastest-running theropod trackway documented from the Cretaceous period.Additionally,this paper reviews biomechanical investigations concerning the maximum running speeds of theropod dinosaurs and illustrates that the inferred speed of this midsized theropod aligns with the predictions of the majority of biomechanical models,thereby providing compelling new evidence to enhance our understanding of the locomotor capabilities of mid-sized theropods.
基金supported by the KRF Research Grant(NRF-2018R1D1A1B07041872).
文摘Multiple subparallel dinosaur trackways closely associated with a solitary theropod trackway occur in the Late Cretaceous deposits at Yugok-dong in Ulsan City,Korea.The trackway-bearing deposits are sheetflood deposits and are well-lithified to preserve the footprints.The paleoenvironment of trackway deposits is interpreted as a lake margin where microbial mats formed under semi-arid paleoclimatic conditions.
