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	Provedor de dados 16 (2) Autor Aguirre-Urreta, M.B. (2) Alvarez, P.P. (2) Palavra-chave 38.22 (2) 42.73 (1) Ammonoidea (1) Argentina (1) Berriasian (1) Calpionellidae (1) Groebericeras (1) Tithonian (1) Mais... Tipo do documento Article / Letter to the editor (2) Ano 1999 (2) País Netherlands (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última [Proceedings of the 4th International Workshop of the Lower Cretaceous Cephalopod Team (IGCP-Project 362) / Peter F. Rawson and Philip J. Hoedemaeker (editors)]: The Berriasian genus Groebericeras in Argentina and the problem of its age 16 Aguirre-Urreta, M.B.; Alvarez, P.P.. Groebericeras bifrons Leanza is described from the Chacao Formation of central Mendoza and the Lo Valdês Formation of central Chile. The species appears limited to the Argentiniceras noduliferum Zone, which is traditionally placed in the lower Berriasian. Spanish records of Groebericeras appear to be younger (Hoedemaeker, 1982), while Groebericeras from Iraq were placed in the late Berriasian by comparison with the Spanish records (Howarth, 1992). Tipo: Article / Letter to the editor Palavras-chave: 38.22. Ano: 1999 URL: http://www.repository.naturalis.nl/record/317363 The Berriasian genus Groebericeras in Argentina and the problem of its age 16 Aguirre-Urreta, M.B.; Alvarez, P.P.. Groebericeras bifrons Leanza is described from the Chacao Formation of central Mendoza and the Lo Valdés Formation of central Chile. The species appears limited to the Argentiniceras noduliferum Zone, which is traditionally placed in the lower Berriasian. Spanish records of Groebericeras appear to be younger (Hoedemaeker, 1982), while Groebericeras from Iraq were placed in the late Berriasian by comparison with the Spanish records (Howarth, 1992). Tipo: Article / Letter to the editor Palavras-chave: Ammonoidea; Groebericeras; Berriasian; Tithonian; Argentina; Calpionellidae; 38.22; 42.73. Ano: 1999 URL: http://www.repository.naturalis.nl/record/216194 Registros recuperados: 2 Primeira ... 1 ... Última

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