Results 91 to 100 of about 29,305 (254)

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

The Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo, Ricardo Araújo, Bruce S. Rubidge, Michael O. Day, Kathleen N. Dollman, Julien Benoit   +5 more
wiley   +1 more source

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

INFLUENCE OF SOME SUMMER PRUNING ON THE DYNAMICS OF GROWTH OF SHOOTS IN THE VARIETY SHIROKAMELNISHKALOZA

Trakia Journal of Sciences
The present studyaim is toevaluate the influence of different summer(green)prunings on the shoot growth dynamics of theShiroka melnishka loza variety grown under non-irrigated conditions.Four variants were tested –control (V0), thinning (V1), thinning ...
M. Mihaylov
doaj   +1 more source

Tracing the evolutionary history of the morpho‐anatomy of baculum in primates

The Anatomical Record, EarlyView.
Abstract Animal morphology reflects both evolutionary history and present‐day adaptation. Male mammal copulatory structures such as the baculum (penile bone) are ideal for studying these processes because of their complexity and high interspecific variability. In primates, however, research has focused mostly on baculum length.
Federica Spani, Maria Pia Morigi, Matteo Bettuzzi, Monica Carosi   +3 more
wiley   +1 more source

Drivers of tail evolution in squamates and their implications for the fossorial origin of snakes

The Anatomical Record, EarlyView.
Abstract The axial skeleton serves as the primary structural support in all vertebrates and is subdivided into five distinct regions: cervical, thoracic, lumbar, sacral, and caudal. Relaxation of constraints acting on the terminal end of the axial skeleton has led to remarkable variation in caudal vertebrae number across Squamata.
Olivia Binfield, Marco Camaiti, Lucy Roberts   +2 more
wiley   +1 more source

Effects of Climatic, Chemical, and Cultural Control Strategies on Community Composition of Auchenorrhyncha and Population Dynamics of Two Major Green Leafhopper Pests in Peach Orchards

Agronomy
A three-year study in two Mediterranean peach orchards monitored Auchenorrhyncha species, including the main vectors of plant pathogens causing significant economic losses.
Patrícia Monteiro Nascimento, Ana Carina Neto, Vera Guerreiro, Anabela Barateiro, Hugo Anjos, José Pereira Coutinho, Marília Antunes, Maria Teresa Rebelo   +7 more
doaj   +1 more source

Computational fluid dynamics simulations of airflow through the nasal passages of rhinolophoid bats

The Anatomical Record, EarlyView.
Abstract The nasal passages of bats that emit their echolocation call through their nostrils have adapted for sound emission as well as standard respiratory and olfactory functions. Rhinolophids, hipposiderids and rhinonycterids all use a high duty cycle (HDC) echolocation strategy.
Carley Goodwin, Jason M. Bourke, Daisuke Koyabu, Kyle N. Armstrong, Vuong T. Tu, Thongchai Ngamprasertwong, Thanakul Wannaprasert, Laura A. B. Wilson   +7 more
wiley   +1 more source

DESIGN AND EXPERIMENT OF AN INTEGRATED PRUNING, THRESHING AND BRANCH CHOPPING MACHINE FOR GREEN PRICKLY ASH

INMATEH Agricultural Engineering
Aiming at the difficulty and low efficiency of threshing green prickly ash, a small-sized integrated pruning, threshing and branch chopping machine driven by a DC motor was designed and studied. The dynamic and static analyses of the tubular straight-cut threshing device and the clamping traction roller-cutting device were carried out respectively. The
Hao WANG, Yanjun ZHOU, Chuanyao LIN, Jian WU, Jia DENG, Xiaobo ZHOU   +5 more
openaire   +1 more source

Comparative micro‐ornamentation patterns of reptile skin: Phylogeny‐ecology debate and species‐specific variations

The Anatomical Record, EarlyView.
Phylogenetic limitations seem more decisive than life habit in the diversity of reptile skin micro‐ornamentation. The ancestral form possibly had polygonal cells with regular borders, smooth surface and had no ridges. Cell morphology change gradually on a single scale, especially widths at scale base are greater than those at middle.
Melodi Yenmiş
wiley   +1 more source