Results 161 to 170 of about 8,797 (298)

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

Multiscale feature tuned trans-DeepLabV3+ based semantic segmentation of aerial images using improved red piranha optimization algorithm. [PDF]

Sci Rep
Anilkumar P, Lokesh K, Naveen Kumar A, John Pradeep D, Pavan Kumar YV, Mallipeddi R.   +5 more
europepmc   +1 more source

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

The Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

Oocyte degeneration in Pygocentrus nattereri induced by Myxobolus sp. (Cnidaria: Myxozoa) in the Brazilian Amazon. [PDF]

Rev Bras Parasitol Vet
Souza Júnior ACO, Sena NM, Pereira CMB, Eduard J, Velasco M, Sindeaux-Neto JL.   +5 more
europepmc   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

The Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

Behavior of Rio Sao Francisco Piranhas in Response to Changes in Space and Density. [PDF]

Zoo Biol
Oldfield RG, Thal JE, Zarlinga NJ, Lukas KE, Wark JD.   +4 more
europepmc   +1 more source

Important role of endogenous microbial symbionts of fish gills in the challenging but highly biodiverse Amazonian blackwaters. [PDF]

Nat Commun, 2023
François-Étienne S, Nicolas L, Eric N, Jaqueline C, Pierre-Luc M, Sidki B, Aleicia H, Danilo B, Luis VA, Nicolas D.   +9 more
europepmc   +1 more source

Integrated Climate Solutions: From Subsidies to Finance with Green Banks [PDF]

, 2016
Andrews, Jennifer, Ashcraft, Catherine, Herndon, Henry, Kelly, Tom, Large, Sarah, Queen, Irene, Wake, Cameron P.   +6 more
core   +1 more source

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

The Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo, Júlio César Costa de Souza, Angele Martins   +2 more
wiley   +1 more source

Something to sink your teeth into: the mechanics of tooth indentation in frugivorous fishes. [PDF]

J R Soc Interface
Rosen J, Cohen K, Donatelli CM, Summers A, Crofts S, Kolmann M.   +5 more
europepmc   +1 more source