The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia

Albian Beudanticeratinae and Cleoniceratinae of the Patagonian Andes are revised taxonomically and chronologically, based on the re-examination of all available specimens and of most Albian localities of Santa Cruz Province, Argentina. Types and figured specimens of previously described species are...

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Detalles Bibliográficos
Autores principales: Riccardi, Alberto Carlos, Medina, Francisco A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Naturales
Ammonoidea
Beudanticeratinae
Cleoniceratinae
Albian
Patagonia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/153053
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-153053
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Ammonoidea
Beudanticeratinae
Cleoniceratinae
Albian
Patagonia
spellingShingle Ciencias Naturales
Ammonoidea
Beudanticeratinae
Cleoniceratinae
Albian
Patagonia
Riccardi, Alberto Carlos
Medina, Francisco A.
The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia
topic_facet Ciencias Naturales
Ammonoidea
Beudanticeratinae
Cleoniceratinae
Albian
Patagonia
description Albian Beudanticeratinae and Cleoniceratinae of the Patagonian Andes are revised taxonomically and chronologically, based on the re-examination of all available specimens and of most Albian localities of Santa Cruz Province, Argentina. Types and figured specimens of previously described species are reillustrated, but a few appear to be lost. Cleoniceratinae are represented by Cleoniceras PARONA & BONARELLI and Aioloceras WHITEHOUSE, and Beudanticeratinae by Beudanticeras HITZEL (?) and Uhligella JACOB. They include Cleoniceras? cf. santacrucense LEANZA, C. sp., Aioloceras argentinum (BONARELLI), A. rollerii and A. aff. rollerii (LEANZA), A. sp., Beudanticeras revoili (PERVINQUIERE), B. cf. laevigatum (J. de C. SOWERBY), B. sp., ?Uhligella sp. a and ?U. sp. b. Affinities with Beudanticeratinae and Cleoniceratinae from other areas of the globe are discussed. Because the type species of Aioloceras was based on two incomplete, juvenile, macroconch phragmocones, all previous diagnoses and systematics of Aioloceras based on these are inadequate. Paracleoniceras COLLIGNON is synonymous with Aioloceras and differences from Pseudosaynella SPATH and Grycia IMLAY are stressed. Inclusion of Aioloceras in Cleoniceratinae is based on ribbing, whorl section and the relatively simple septal suture with wide asymmetric L. Reports of Aioloceras from other continents are doubtful. Patagonian Beudanticeratinae and Cleoniceratinae are present in several sections between San Martin and Cardiel lakes, where they characterize stratigraphic levels. They are associated with other ammonoids, such as Douvilleiceras sp., Puzosia recteradiata COLLIGNON, Puzosia sp., Rossalites imlayi (LEANZA) and Pictetia ovalis COLLIGNON. This fauna belongs to the Aioloceras argentinum and to the A. rollerii (new) Assemblage Zones, coeval to the upper Lower Albian Mammillatum Superzone.
format Articulo
Articulo
author Riccardi, Alberto Carlos
Medina, Francisco A.
author_facet Riccardi, Alberto Carlos
Medina, Francisco A.
author_sort Riccardi, Alberto Carlos
title The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia
title_short The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia
title_full The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia
title_fullStr The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia
title_full_unstemmed The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia
title_sort beudanticeratinae and cleoniceratinae (ammonitida) from the lower albian of patagonia
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/153053
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spelling I19-R120-10915-1530532023-05-17T04:07:17Z http://sedici.unlp.edu.ar/handle/10915/153053 issn:0253-6730 The Beudanticeratinae and Cleoniceratinae (Ammonitida) from the Lower Albian of Patagonia Les Beudanticeratinae et les Cleoniceratinae (Ammonitida) de l’Albien inférieur de Patagonie Riccardi, Alberto Carlos Medina, Francisco A. 2002 2023-05-16T13:24:46Z en Ciencias Naturales Ammonoidea Beudanticeratinae Cleoniceratinae Albian Patagonia Albian Beudanticeratinae and Cleoniceratinae of the Patagonian Andes are revised taxonomically and chronologically, based on the re-examination of all available specimens and of most Albian localities of Santa Cruz Province, Argentina. Types and figured specimens of previously described species are reillustrated, but a few appear to be lost. Cleoniceratinae are represented by Cleoniceras PARONA & BONARELLI and Aioloceras WHITEHOUSE, and Beudanticeratinae by Beudanticeras HITZEL (?) and Uhligella JACOB. They include Cleoniceras? cf. santacrucense LEANZA, C. sp., Aioloceras argentinum (BONARELLI), A. rollerii and A. aff. rollerii (LEANZA), A. sp., Beudanticeras revoili (PERVINQUIERE), B. cf. laevigatum (J. de C. SOWERBY), B. sp., ?Uhligella sp. a and ?U. sp. b. Affinities with Beudanticeratinae and Cleoniceratinae from other areas of the globe are discussed. Because the type species of Aioloceras was based on two incomplete, juvenile, macroconch phragmocones, all previous diagnoses and systematics of Aioloceras based on these are inadequate. Paracleoniceras COLLIGNON is synonymous with Aioloceras and differences from Pseudosaynella SPATH and Grycia IMLAY are stressed. Inclusion of Aioloceras in Cleoniceratinae is based on ribbing, whorl section and the relatively simple septal suture with wide asymmetric L. Reports of Aioloceras from other continents are doubtful. Patagonian Beudanticeratinae and Cleoniceratinae are present in several sections between San Martin and Cardiel lakes, where they characterize stratigraphic levels. They are associated with other ammonoids, such as Douvilleiceras sp., Puzosia recteradiata COLLIGNON, Puzosia sp., Rossalites imlayi (LEANZA) and Pictetia ovalis COLLIGNON. This fauna belongs to the Aioloceras argentinum and to the A. rollerii (new) Assemblage Zones, coeval to the upper Lower Albian Mammillatum Superzone. Les Beudanticeratinae et Cleoniceratinae de l’Albien des Andes Patagoniques font l’objet d’une révision taxonomique et chronologique, basée sur le reexamen des spécimens et des gisements albiens de la province de Santa Cruz (Argentine). Les exemplaires, types et figures des espèces décrits antérieurement, sont ici refigurés, bien que certains soient perdus. Les Cleoniceratinae sont représentés par Cleoniceras PARONA & BONARELLI et Aioloceras WHITEHOUSE, et les Beudanticeratinae par Beudanticeras HITZEL (?) et Uhligella JACOB. Ces genres comprennent Cleoniceras? cf. santacrucense LEANZA, C. sp., Aioloceras argentinum (BONARELLI), A. rollerii et A. aff. rollerii (LEANZA), A. sp., Beudanticeras revoili (PERVINQUIERE), B. cf. laevigatum (J. de C. SOWERBY), B. sp., ?Uhligella sp. a et ?U. sp. b. Les affinités des Beudanticeratinae et Cleoniceratinae avec d’autres régions sont aussi discutés. En raison de l’espèce-type du genre Aioloceras, basée sur deux phragmocones juvéniles incomplets de macoconques, toutes les diagnoses et la systématique antérieure du genre Aioloceras sont inadéquates. Paracleoniceras COLLIGNON est considéré comme synonyme de Aioloceras et les différences avec Pseudosaynella SPATH et Grycia IMLAY sont discutées. L’attribution de Aioloceras à la sous-famille des Cleoniceratinae est fondée sur la costulation, la section des tours et la ligne cloisonnaire qui est relativement simple avec un lobe (L) ample et asymétrique. La présence de Aioloceras dans d’autres continents est douteuse. Les Beudanticeratinae et Cleoniceratinae de la Patagonie sont connus dans quelques gisements situés entre les lacs San Martin et Cardiel. Ils sont associés avec d’autres ammonites, telles que Douvilleiceras sp., Puzosia recteradiata COLLIGNON, Puzosia sp., Rossalites imlayi (LEANZA) et Pictetia ovalis COLLIGNON. Cette faune fait partie de T’’Assemblage Zone” (partie supérieure de l’Albien inférieur) à Aioloceras argentinum et à A. rollerii (neuf), de la Superzone à Mammillatum de l’Albien Inférieur supérieur. Facultad de Ciencias Naturales y Museo Universidad de Buenos Aires Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 291-351

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