Artículo
Onshore-offshore trend in the evolution of calliotropid gastropods expressed in shell morphology
Fecha de publicación:
10/2017
Editorial:
Cambridge University Press
Revista:
Journal of Systematic Palaeontology
ISSN:
1477-2019
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Two new species of calliotropid gastropods, Calliotropis (Riselloidea) faustiankensis sp. nov. and Calliotropis (Riselloidea) lukovensis sp. nov., are described from the Middle Jurassic (Middle Bathonian−Upper Callovian) of Poland. Additionally, new excellently preserved shells of Calliotropis (Riselloidea) biarmata (Münster) allow redefinition of this species. The new morphological information obtained from these three fossil species of Calliotropis in combination with the dataset assembled from 20 extinct and 24 living calliotropids is here summarized in quantitative multivariate and principal component analyses suggesting an onshore-offshore trend in calliotropid gastropod evolution from the Triassic to Recent times. This trend, which is expressed in the morphology of shells, shows that the Mesozoic species are mostly shallow water, while Cenozoic and Recent taxa are mostly deep water. The distinction supports earlier suggestions that the genus Calliotropis can be subdivided into two temporal subgenera belonging to the family Eucyclidae Koken.
Palabras clave:
Calliotropis
,
Middle Jurassic
,
Systematic
,
Evolution
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IPGP)
Articulos de INSTITUTO PATAGONICO DE GEOLOGIA Y PALEONTOLOGIA
Articulos de INSTITUTO PATAGONICO DE GEOLOGIA Y PALEONTOLOGIA
Citación
Ferrari, Silvia Mariel; Kaim, Andrzej; Onshore-offshore trend in the evolution of calliotropid gastropods expressed in shell morphology; Cambridge University Press; Journal of Systematic Palaeontology; 10-2017; 1-18
Compartir
Altmétricas