Results 131 to 140 of about 109,791 (268)

Jurassic avialan reveals stepwise evolution of bony tail in birds. [PDF]

Sci Adv
Wang M, Tang J, Deng K, Dong L, Xu L, Xu X, Lin M, Du H, Lin G, Chen R, Zhang C, Zhou Z.   +11 more
europepmc   +1 more source

Tracheal chambers as a key innovation for high‐frequency emission in bat echolocation

The Anatomical Record, EarlyView.
Abstract Key innovations are pivotal for biodiversity and facilitating evolutionary success, enabling organisms' adaptation to various ecological niches through the diversification of phenotypic traits. In mammals, notable adaptations include evolving hypsodonty for grazing on grasses and, for bats, evolving echolocation and wing acquisition.
Nicolas L. M. Brualla, Laura A. B. Wilson, Khizar Hayat, Michael Doube, Vuong Tan Tu, Thongchai Ngamprasertwong, Thanakul Wannaprasert, Daisuke Koyabu   +7 more
wiley   +1 more source

Radiographic comparison of lumbar vertebral morphology between cats with six and seven lumbar vertebrae. [PDF]

J Vet Med Sci
Kim G, Noh D, Choi S, Kishimoto M, Lee SK, Lee K.   +5 more
europepmc   +1 more source

Scaling and ecomorphology of lagomorph body shape and appendicular skeleton

The Anatomical Record, EarlyView.
Abstract Body shape is one of the most prominent features of phenotypic variation. Yet, mammalian body shapes are poorly quantified and the underlying components contributing to its diversity and its relationship to other skeletal components are rarely tested.
Nia Brice, Coby Huizenga, Chris J. Law
wiley   +1 more source

Influence of Screw Length and Bone Quality on Pedicle Screw Anchorage Under Cyclic Fatigue Loading. [PDF]

Global Spine J
Roch FE, Tekin B, Jäckle K, Meier MP, Klockner F, Awan Malik H, Lehmann W, Weiser L, Roch PJ.   +8 more
europepmc   +1 more source

Human evolution and the obstetrical dilemma: The pelvic floor hypothesis

The Anatomical Record, EarlyView.
Abstract Human childbirth is mechanically difficult because a large‐headed, broad‐shouldered fetus must pass through a comparatively narrow, twisted bony birth canal. Traditional explanations of this “obstetrical dilemma” emphasize the role of bipedal locomotion in inhibiting the evolution of a wider, more spacious pelvis.
Barbara Fischer, Ekaterina Stansfield
wiley   +1 more source

Severe Disc degeneration is associated with lower caudal subendplate hounsfield unit values in degenerative lumbar spinal stenosis. [PDF]

BMC Musculoskelet Disord
Song X, Zhou J, Qian B, Ren D, Feng S, Wang J.   +5 more
europepmc   +1 more source

Osteology of the pectoral girdle and forelimb of Siriusgnathus niemeyerorum, a Late Triassic traversodontid cynodont from Brazil

The Anatomical Record, EarlyView.
Abstract Traversodontids are non‐mammaliaform cynodonts, herbivorous to omnivorous, that lived during the Triassic. In the Late Triassic, some members of this group increased in body size relative to other cynodont lineages and evolved postcranial adaptations associated with locomotion.
Jhonata H. A. Martins, Leonardo Kerber
wiley   +1 more source

Validation of deep learning enabled web based and smartphone optimized application RadAnalyzer to measure vertebral heart size and vertebral left atrial size in dogs. [PDF]

PLoS One
Gordon S, Reyes T, Baibos-Reyes T, Sykes KT, Lim S, Watson A.   +5 more
europepmc   +1 more source

Commentary: Additional observations on the skeleton of a juvenile Gryposaurus notabilis (Ornithischia: Hadrosauridae)

The Anatomical Record, EarlyView.
Jordan C. Mallon, David C. Evans, Yuguang Zhang, Hai Xing   +3 more
wiley   +1 more source