Artículo
New Early Jurassic gastropods from west-central Patagonia, Argentina
Fecha de publicación:
01/2012
Editorial:
Polish Academy of Sciences. Institute of Paleobiology
Revista:
Acta Palaeontologica Polonica
ISSN:
0567-7920
e-ISSN:
1732-2421
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A new gastropod fauna is reported from Chubut province of west−central Patagonia. Members of Trochoidea, Pseudo−melanoidea, Campaniloidea, and Nerinoidea are recorded from the Early Jurassic (Late Pliensbachian–Early Toarcian) of Mulanguińeu Formation. The gastropod fauna consists of two new species: the pseudomelaniid Pseudomelania feruglioisp. nov. and the protorculid Anulifera chubutensissp. nov. Other members of the association are Pseudomelania sp.; the ampulloispirids Globularia cf. catanlilensis, Globularia sp., and Naricopsina? sp.; the nerineids Nerinea? sp. 1 and Nerinea? sp. 2; the trochids Lithotrochus humblodtii, Lithotrochus cf.rothi, and two indeterminable trochids species. An analysis of diversity was made considering all gastropod fauna recovered so far from five fossiliferous localities sam− pled in west−central Patagonia. The preliminary results of this study suggests that the Jurassic marine sequences of west central Chubut province are dominated by gastropods of Eucyclidae, Pseudomelaniidae, Procerithiidae, and Ampul− linidae groups. However, the rarefaction curves of particular marine gastropod faunas in the Jurassic of Patagonia are still far from saturation requiring further collecting effort.
Palabras clave:
Gastopoda
,
Mulanguiñeu Formation
,
Early Jurassic
,
Patagonia
,
Chubut
,
Toarcian
,
Argentina
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT-CENPAT)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CENPAT
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CENPAT
Citación
Ferrari, Silvia Mariel; New Early Jurassic gastropods from west-central Patagonia, Argentina; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 58; 3; 1-2012; 579-593
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