Results 251 to 260 of about 1,423,105 (342)

Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Estevan Eltink   +5 more
wiley   +1 more source

A new species of <i>Begonia</i> (Begoniaceae) from the eastern mountains of Panama. [PDF]

open access: yesPhytoKeys
Guillén L   +4 more
europepmc   +1 more source

Inside the head of Crotalus durissus LINNAEUS, 1758 (Serpentes, Viperidae, Crotalinae): Macroscopic description of the brain with ontogenetic insights

open access: yesThe Anatomical Record, EarlyView.
Abstract Neuroanatomy studies in vertebrates have garnered significant attention in recent years, particularly driven by advancements in computerized tomography imaging techniques. Nonetheless, these advancements remain largely constrained to specific vertebrate groups, notably mammals, birds, and fish, leaving studies in reptiles at an incipient stage.
Giordanna Issa Lucas, Angele Martins
wiley   +1 more source

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

open access: yesThe Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

La tecnología DLT en el mercado de valores, en especial respecto de las acciones de las sociedades cotizadas. Aspectos generales y análisis de una posible desintermediación del mercado

open access: yes, 2020
El presente trabajo tiene como punto de partida el creciente desarrollo de la aplicación de la tecnología DLT (distributed ledger technology, generalmente conocida como blockchain) en el mercado de valores y, en especial, en el ámbito de las sociedades cotizadas. Este tipo de tecnología se asienta sobre la existencia de una base de datos distribuida de
openaire   +1 more source

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