Aplicación de la morfometría multivariante para acceder a la variabilidad morfológica de los dientes de saurópodos
Palabras clave:
Multivariate statistics, Morphometric variables, Systematics, Dinosaurs, SauropodsResumen
This study aims to explore and characterize the morphological variability
in sauropod teeth through multivariate statistics using Principal Component
Analysis (PCA), Discriminant Function Analysis (DFA) and Cluster
analysis, and access the potential of these methods to classify them. We
analyzed a sample of spoon-shaped, spatula-shaped, and compressed conechisel-
shaped teeth. The apicobasal apex length, the total length of the distal
apex margin, and the total length of the mesial apex margin are identified
by PCAs as the most important variables affecting morphological variability.
The DFAs enabled to differentiate the morphospaces occupation of the
main sauropod groups analyzed (e.g., Camarasauridae, Turiasauria). Cluster
analysis allowed differentiate teeth with low from moderate to high SI. The
morphospaces of spoon-shaped, spatula-shaped, and compressed conechisel-
shaped teeth were differentiated, some showing a slight overlap. The
tooth wear seems to influence the obtained results, and teeth with moderate
or strong wear should be excluded in future analyses.
Descargas
Referencias
Hammer, Ø., Harper, D. A. T., y Ryan, P. D. (2001). Past: Paleontological statistics
software package for education and data analysis. Palaeontologia
Electronica 4(1).
Hendrickx, C., Mateus, O., y Araújo, R. (2015). The dentition of megalosaurid
theropods. Acta Palaeontologica Polonica 60(3), 627-642.
Mocho, P., Royo-Torres, R., Malafaia, E., Escaso, F., Silva, B., y Ortega, F.
(2016). Turiasauria-like teeth from the Upper Jurassic of the Lusitanian
Basin, Portugal. Historical Biology 28(7), 861–880.
Rasband, W.S. (1997-2015) ImageJ. National Institutes of Health, Bethesda,
Maryland, USA. http://imagej.nih.gov/ij
Smith, J. B., Vann, D. R., y Dodson, P. (2005). Dental Morphology and Variation
in Theropod Dinosaurs: Implications for Taxonomic Identification of
Isolated Teeth. The Anatomical Record - Part A Discoveries in Molecular,
Cellular, and Evolutionary Biology 285(2), 699-736.
Upchurch, P. (1998). The phylogenetic relationships of sauropod dinosaurs.
Zoological Journal of the Linnean Society 124(1), 43–103.
Descargas
Número
Sección
Licencia
Derechos de autor 2026 Zubía. Revista de ciencias
Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0.
Los autores que publican en Zubía conservan los derechos de autor de sus trabajos y autorizan a la revista la primera publicación de los mismos.
Los artículos se publican bajo la licencia Creative Commons Atribución–No Comercial–Compartir Igual (CC BY-NC-SA), que permite su uso, distribución y reproducción en cualquier medio, siempre que se cite adecuadamente la autoría original, no se realice un uso comercial y se mantenga la misma licencia.
