INVESTIGADORES
ACOSTA HOSPITALECHE Carolina Ileana Alicia
artículos
Título:
Distinguishing between two Antarctic species of Eocene Palaeeudyptes penguins: a statistical approach using tarsometatarsi.
Autor/es:
JADWISZCZAK, P.; ACOSTA HOSPITALECHE, C.
Revista:
POLISH POLAR RESEARCH
Editorial:
POLISH ACAD SCIENCES COMMITTEE POLAR RESEARCH
Referencias:
Año: 2013 vol. 34 p. 237 - 252
ISSN:
0138-0338
Resumen:
Defining species boundaries, due to morphological variation, often represents a significant challenge in paleozoology. In this paper we report results from multi- and univariate exploratory data analyses revealing some morphometric patterns within Eocene Antarctic representatives of Palaeeudyptes penguins. These large-sized birds were represented by two species, P. gunnari and P. klekowskii, known mainly from numerous isolated bones. Investigations focused on tarsometatarsi, crucial bones in paleontology of early penguins, resulted in a probability-based framework allowing for the ?fuzzy? partitioning the studied specimens into two taxa with partly overlapping size distributions.
