Tertiary nautiloids from Patagonia, southern Argentina
Nautiloids are represented in the Tertiary of Argentina by four genera and six species: Eutrephoceras sp., Hercoglossa rionegrensis Reichler, Hercoglossa romeroi (Ihering), Hercoglossa aff. H. walteri Miller, and Cimomia camachoi Masiuk, from the Paleocene Roca, El Fuerte and Salamanca formations, a...
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| Autores principales: | , , |
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| Publicado: |
1999
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v36_n2_p189_Casadio http://hdl.handle.net/20.500.12110/paper_00027014_v36_n2_p189_Casadio |
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| Sumario: | Nautiloids are represented in the Tertiary of Argentina by four genera and six species: Eutrephoceras sp., Hercoglossa rionegrensis Reichler, Hercoglossa romeroi (Ihering), Hercoglossa aff. H. walteri Miller, and Cimomia camachoi Masiuk, from the Paleocene Roca, El Fuerte and Salamanca formations, and Aturia caroliameghinoi (Ihering), from the Eocene-Oligocene San Julian Formation. A shallow habitat is proposed for Hercoglossa aff. H. walteri. Paleoenvironmental conditions for the Argentinian Tertiary nautiloids were most favorable during the Danian; five species are known. The subclass Nautiloidea is not recorded in Argentina in post-Oligocene rocks. |
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