Results 11 to 20 of about 14,348 (225)

Functional Morphology of the Scaphoid in Extant African Apes, Humans and Fossil Hominins. [PDF]

open access: yesAm J Biol Anthropol
ABSTRACT Objectives The morphology of the hominoid scaphoid has played a key role in functional and evolutionary hypotheses related to the emergence of hominin bipedalism and tool use. However, the scaphoid's complex morphology is challenging to comparatively analyze via traditional 2D linear measurements.
Steer NG   +5 more
europepmc   +2 more sources

Morfometria tridimensional (3D) da face [PDF]

open access: yesDental Press Journal of Orthodontics, 2010
Márcio De Menezes, Chiarella Sforza
exaly   +3 more sources

Morfometría de Sceloporus variabilis (Wiegmann 1834; Sauria: Phrynosomatidae) en tres ecosistemas de Veracruz, México

open access: yesEcosistemas y Recursos Agropecuarios, 2023
La morfometría lineal y geométrica son herramientas que evalúan la variación morfológica de los individuos de una especie en función del ambiente donde sus poblaciones habitan.
Roberto Carlos Montiel-Martínez   +6 more
doaj   +1 more source

An outsider on the Antarctic Peninsula: A new record of the non-native moth Plodia interpunctella (Lepidoptera: Pyralidae). [PDF]

open access: yesEcol Evol
This text reports the discovery of the microlepidopteran Plodia interpunctella at the Chilean Yelcho scientific station on Doumer Island, near the west coast of the Antarctic Peninsula. Plodia interpunctella is a global pest known for surviving in stored food for extended periods.
Benitez HA   +12 more
europepmc   +2 more sources

3D pollination biology using micro‐computed tomography and geometric morphometrics in Theobroma cacao

open access: yesApplications in Plant Sciences, Volume 11, Issue 5, September-October 2023., 2023
Abstract Premise Imaging technologies that capture three‐dimensional (3D) variation in floral morphology at micro‐ and nano‐resolutions are increasingly accessible. In herkogamous flowers, such as those of Theobroma cacao, structural barriers between anthers and stigmas represent bottlenecks that restrict pollinator size and access to reproductive ...
Katherine A. Wolcott   +4 more
wiley   +1 more source

Trilobites of Thailand's Cambrian–Ordovician Tarutao Group and their geological setting

open access: yesPapers in Palaeontology, Volume 9, Issue 5, September/October 2023., 2023
Abstract Tuff‐bearing upper Cambrian to lowermost Ordovician strata on Ko Tarutao island, Satun province, southernmost peninsular Thailand, contain a rich trilobite fauna relevant to global biostratigraphy, peri‐Gondwanan palaeogeography and shifting evolutionary mode.
Shelly J. Wernette   +3 more
wiley   +1 more source

Skeletal age during hurricane impacts fluctuating asymmetry in Cayo Santiago rhesus macaques

open access: yesEcology and Evolution, Volume 13, Issue 8, August 2023., 2023
Fluctuating asymmetry (FA), or random deviations from symmetry, can be used as a proxy for developmental instability, and anthropogenic and natural disruptions have been associated with increased levels of FA. In this study, we investigate the effect of demographic variables (age, sex, and decade of birth) and hurricane experience on FA in a model ...
Ashly N. Romero   +3 more
wiley   +1 more source

Constructing a multiple‐part morphospace using a multiblock method

open access: yesMethods in Ecology and Evolution, Volume 14, Issue 1, Page 65-76, January 2023., 2023
Abstract Popular current methods for quantifying variation in biological shape are well‐suited to analyses of isolated parts (e.g. the same bone from the skeletons of many individuals). An analytical challenge exists for quantifying variation between the shapes of multiple‐part objects where each part has a different position, rotation or scale (e.g ...
Daniel B. Thomas   +5 more
wiley   +1 more source

Cranial ecomorphology of turtles and neck retraction as a possible trigger of ecological diversification

open access: yesEvolution, Volume 76, Issue 11, Page 2566-2586, November 2022., 2022
Abstract Turtles have a highly modified body plan, including a rigid shell that constrains postcranial anatomy. Skull morphology and neck mobility may therefore be key to ecological specialization in turtles. However, the ecological signal of turtle skull morphologies has not been rigorously evaluated, leaving uncertainties about the roles of ...
Guilherme Hermanson   +5 more
wiley   +1 more source

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