New Valanginian–Hauterivian neocomitid ammonites from the Neuquén Basin, Argentina

Three distinct, rich neocomitid faunas occur in the Agrio Formation (middle Valanginian to lowermost Barremian). In the ammonite sequences between, neocomitids are very rare and limited to two thin horizons. The lower, upper Valanginian level has yielded Neocomites (Varlheideites) cf. peregrinus Raw...

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Detalles Bibliográficos
Autores principales:	Aguirre-Urreta, B., Rawson, P.F.
Formato:	JOUR
Materias:	Agrio Formation Ammonite Andes Early Cretaceous Paleogeography ammonite Cretaceous endemic species new species new taxon paleogeography Ammonoidea Neocomitidae
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01956671_v88_n_p149_AguirreUrreta
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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