Data/hora: 01/06/2024 10:49:13

Provedor de dados: 	Ameghiniana	
País: 	Argentina	
Título: 	Ammonoids (Crioceratitinae, Hauterivian) from the Austral Basin, Chile	
Autores: 	Aguirre-Urreta,Beatriz; Suárez,Manuel; de la Cruz,Rita; Ramos,Victor A.	
Data: 	2007-06-01	
Ano: 	2007	
Palavras-chave: 	Ammonoids; Crioceratitinae; Hauterivian; Austral Basin; Chile.	
Resumo: 	The low diversity of the Austral Basin ammonoid faunas was traditionally associated with a high degree of endemism. However, as reported herein, the ammonoids belonging to the Family Ancyloceratidae, Subfamily Crioceratitinae have affinities with European forms. Therefore, the Hauterivian ammonoids of the Austral Basin represent a mixture of endemic (Favrella Douvillé), with typical Tethyan examples (Hemihoplites Spath, Crioceratites Léveillé), and faunas that are characteristic of Northwestern Europe on the margins of the Boreal realm (Protaconeceras Casey, Aegocrioceras Spath), although the endemic forms dominate in number of specimens. The following species are described here: Aegocrioceras patagonicum sp. nov. Aguirre-Urreta, Crioceratites (C.) apricum (Giovine) and Crioceratites sp. aff. C. (C.) schlagintweiti (Giovine). This rare and localized appearance of taxa of the Northern Hemisphere suggests periods of sea level rise that permitted widespread migration from this region to peripheral basins.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142007000200010	
Editor: 	Asociación Paleontológica Argentina	
Formato: 	text/html	
Fonte: 	Ameghiniana  v.44 n.2 2007	
Fonte: 	info:eu-repo/semantics/openAccess