A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina

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...

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Detalles Bibliográficos
Autor principal: Cichowolski, M.
Formato: JOUR
Materias:
Argentina
Cephalopoda
Eastern Cordillera
Endocerida
Floian
Ordovician
Proterocameroceratidae
cephalopod
Gondwana
paleobiogeography
stratigraphy
taxonomy
Andes
Cordillera Oriental [Andes]
South America
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05677920_v54_n1_p99_Cichowolski
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_05677920_v54_n1_p99_Cichowolski
record_format dspace
spelling todo:paper_05677920_v54_n1_p99_Cichowolski2023-10-03T15:35:57Z A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina Cichowolski, M. Argentina Cephalopoda Eastern Cordillera Endocerida Floian Ordovician Proterocameroceratidae cephalopod Gondwana Ordovician paleobiogeography stratigraphy taxonomy Andes Cordillera Oriental [Andes] South America Cephalopoda 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05677920_v54_n1_p99_Cichowolski
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Cephalopoda
Eastern Cordillera
Endocerida
Floian
Ordovician
Proterocameroceratidae
cephalopod
Gondwana
Ordovician
paleobiogeography
stratigraphy
taxonomy
Andes
Cordillera Oriental [Andes]
South America
Cephalopoda
spellingShingle Argentina
Cephalopoda
Eastern Cordillera
Endocerida
Floian
Ordovician
Proterocameroceratidae
cephalopod
Gondwana
Ordovician
paleobiogeography
stratigraphy
taxonomy
Andes
Cordillera Oriental [Andes]
South America
Cephalopoda
Cichowolski, M.
A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina
topic_facet Argentina
Cephalopoda
Eastern Cordillera
Endocerida
Floian
Ordovician
Proterocameroceratidae
cephalopod
Gondwana
Ordovician
paleobiogeography
stratigraphy
taxonomy
Andes
Cordillera Oriental [Andes]
South America
Cephalopoda
description 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.
format JOUR
author Cichowolski, M.
author_facet Cichowolski, M.
author_sort Cichowolski, M.
title A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina
title_short A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina
title_full A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina
title_fullStr A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina
title_full_unstemmed A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician) of the Eastern Cordillera, Argentina
title_sort review of the endocerid cephalopod protocyptendoceras from the floian (lower ordovician) of the eastern cordillera, argentina
url http://hdl.handle.net/20.500.12110/paper_05677920_v54_n1_p99_Cichowolski
work_keys_str_mv AT cichowolskim areviewoftheendoceridcephalopodprotocyptendocerasfromthefloianlowerordovicianoftheeasterncordilleraargentina
AT cichowolskim reviewoftheendoceridcephalopodprotocyptendocerasfromthefloianlowerordovicianoftheeasterncordilleraargentina
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