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Ontogenetic variation in skull shape of Thrichomys apereoides (Rodentia : Echimyidae)
(Amer Soc Mammalogists, 1999-02-01)
The pattern of change in shape during postnatal development in skulls of punare (Thrichomys apereoides) skulls, was studied by geometric morphometric techniques. Skull shape observed in T. apereoides varied both with size ...
Embryonic shell shape as an early indicator of pollution in marine gastropods
(Elsevier, 2021-05)
Gastropods shell shape has been proposed as a good indicator of environmental changes while geometric morphometric (GM) is a powerful tool to detect such changes. Shell shape pattern in adults of the marine gastropod ...
Evolution of molar shape in didelphid marsupials: analysis of the influence of ecological factors and the phylogenetic legacy
(Oxford University Press, 2014-01)
The diversity of items consumed by modern didelphids, varying from mostly fruits in Caluromys Allen to mostly small vertebrates in Lutreolina O. Thomas, may cause changes in molar size and shape. We evaluated the morphometric ...
The overrated use of the morphological cryptic species concept: An example with Nyctelia darkbeetles (Coleoptera: Tenebrionidae) using geometric morphometrics
(Elsevier, 2015)
The cryptic concept refers to two or more species that have been classified as a single nominal species due
to the fact that they are apparently morphologically indistinguishable. In recent years, the development
of ...
Size and shape analysis of gunflints from the British shipwreck Deltebre I (1813), Catalonia, Spain: a geometric morphometric comparison of unused and used artefacts
(Springer, 2019-09)
Gunflints represent a worldwide feature of lithic technology in modern times. This type of artefact was used to ignite the powder of firearms through a flintlock mechanismfrom the middle-seventeenth to the early-twentieth ...
Carapace shape of some trichodactylidae crabs: Analysis by geometric tools as a possible way of including females in taxonomic differentiation
(Institut Catalá de Paleontologia, 2009-10)
The family Trichodactylidae characterizes the aquatic environments of the plain, being the Paraná River an important system in the continent. The taxonomic studies of this group were based on carapace ornamentation and ...
Descripción sintética de objetos en dos dimensiones de acuerdo a su contorno
(2008-10-20)
RESUMEN: En este trabajo se propone una técnica para la descripción sintáctica del contorno de figuras geométricas en dos dimensiones, por medio del análisis de puntos equidistantes sobre el contorno, se aplican criterios ...