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Abstract:

Ordovician cephalopods from Western Gondwana are still poorly known and published data is in need of systematic and stratigraphical revision. In this work, the endocerid proterocameroceratid Protocyptendoceras from the Floian of the Eastern Cordillera of Argentina is revised using new material from La Ciénaga, 5 km upstream from Purmamarca. The species P. corvalani and P. teicherti are considered to be junior synonyms of P. fuenzalidae, which is redescribed in detail and reillustrated. Specimens preserve adapical parts of isolated siphuncles, related here to the presence of endocones in a posterior portion. Evidently P. fuenzalidae had a nektobenthic mode of life in a shallow water environment, oriented horizontally. Its palaeobiogeographical affinities are mainly with Floian proterocameroceratids from Eastern Gondwana, such as Anthoceras decorum and the related genera Lobendoceras, Ventroloboceras, and Notocycloceras.

Registro:

Documento: Artículo
Título:A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina
Autor:Cichowolski, M.
Filiación:Área de Paleontología, Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Pab. II, Intendente Güiraldes 2160, C1428EGA Buenos Aires, Argentina
Palabras clave:Argentina; Cephalopoda; Eastern Cordillera; Endocerida; Floian; Ordovician; Proterocameroceratidae; cephalopod; Gondwana; Ordovician; paleobiogeography; stratigraphy; taxonomy; Andes; Cordillera Oriental [Andes]; South America; Cephalopoda
Año:2009
Volumen:54
Número:1
Página de inicio:99
Página de fin:109
DOI: http://dx.doi.org/10.4202/app.2009.0110
Título revista:Acta Palaeontologica Polonica
Título revista abreviado:Acta Palaeontol. Pol.
ISSN:05677920
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05677920_v54_n1_p99_Cichowolski

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Citas:

---------- APA ----------
(2009) . A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina. Acta Palaeontologica Polonica, 54(1), 99-109.
http://dx.doi.org/10.4202/app.2009.0110
---------- CHICAGO ----------
Cichowolski, M. "A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina" . Acta Palaeontologica Polonica 54, no. 1 (2009) : 99-109.
http://dx.doi.org/10.4202/app.2009.0110
---------- MLA ----------
Cichowolski, M. "A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina" . Acta Palaeontologica Polonica, vol. 54, no. 1, 2009, pp. 99-109.
http://dx.doi.org/10.4202/app.2009.0110
---------- VANCOUVER ----------
Cichowolski, M. A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina. Acta Palaeontol. Pol. 2009;54(1):99-109.
http://dx.doi.org/10.4202/app.2009.0110