Abstract:
The species Spiroceras orbignyi (Baugier y Sauze) is recorded from the upper levels of the Los Patillos Formation in the Paso del Espinacito area, Principal Cordillera of San Juan. S. orbignyi shows a widespread geographic distribution but is stratigraphically restricted to the Upper Bajocian. In the local ammonoid zonation it can be placed in the Megasphaeroceras magnum Assemblage zone, which is partially equivalent to the Upper Bajocian Submediterrean Subfurcatum (=Niortense) and Garantiana zones. This finding represents the first record of the genus Spiroceras from Argentina. -English summary
Registro:
Documento: |
Artículo
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Título: | A heteromorphous ammonite (Spiroceratidae) of Upper Bajocian age from Paso del Espinacito, San Juan, Argentina |
Autor: | Aguirre Urreta, M.B.; Alvarez, P.P. |
Filiación: | Dept. de Ciencias Geologicas, Univ. de Buenos Aires, Ciudad Universitaria, 1428, Buenos Aires.
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Palabras clave: | ammonite; Bajocian; heteromorph; Jurassic; Spiroceratidae; systematics; Argentina; Paso del Espinacito; San Juan |
Año: | 1993
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Volumen: | 30
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Número: | 2
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Página de inicio: | 129
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Página de fin: | 134
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Título revista: | Ameghiniana
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ISSN: | 00027014
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v30_n2_p129_AguirreUrreta |
Citas:
---------- APA ----------
Aguirre Urreta, M.B. & Alvarez, P.P.
(1993)
. A heteromorphous ammonite (Spiroceratidae) of Upper Bajocian age from Paso del Espinacito, San Juan, Argentina . Ameghiniana, 30(2), 129-134.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v30_n2_p129_AguirreUrreta [ ]
---------- CHICAGO ----------
Aguirre Urreta, M.B., Alvarez, P.P.
"A heteromorphous ammonite (Spiroceratidae) of Upper Bajocian age from Paso del Espinacito, San Juan, Argentina "
. Ameghiniana 30, no. 2
(1993) : 129-134.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v30_n2_p129_AguirreUrreta [ ]
---------- MLA ----------
Aguirre Urreta, M.B., Alvarez, P.P.
"A heteromorphous ammonite (Spiroceratidae) of Upper Bajocian age from Paso del Espinacito, San Juan, Argentina "
. Ameghiniana, vol. 30, no. 2, 1993, pp. 129-134.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v30_n2_p129_AguirreUrreta [ ]
---------- VANCOUVER ----------
Aguirre Urreta, M.B., Alvarez, P.P. A heteromorphous ammonite (Spiroceratidae) of Upper Bajocian age from Paso del Espinacito, San Juan, Argentina . 1993;30(2):129-134.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v30_n2_p129_AguirreUrreta [ ]