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Jurassic Forum » JURASSIC references & paper reviews » Jurassic around the world » Dietze et al., 2012 (Ammonites and stratigraphy of a Lower Bajocian)
Dietze et al., 2012
mhornДата: Friday, 02.11.2012, 18:05 | Сообщение # 1
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Dietze V., von Hillebrandt A., Riccardi A., Schweigert G. (2012) Ammonites and stratigraphy of a Lower Bajocian (Middle Jurassic) section in Sierra Chacaico (Neuquén Basin, Argentina) // Zitteliana A 52, P.119–139.

pdf: http://www.palmuc.de/bspg....tze.pdf

A Lower Bajocian section from southern Neuquén Basin (Argentina), with 3 faunal horizons (sphaeroceroides, submicrostoma and giebelihorizons) in the Singularis and Giebeli zones, is described. The Giebeli Zone is relatively thick in contrast with the section at Paso del Espinacito. The ammonite species Chondromileia submicrostoma(Gottsche) is quite variable and consists of large specimens. For the first time well preserved and complete macroconch specimens of Emileia multiformis(Gottsche) are described. It is shown that the lithostratigraphic and biostratigraphic boundaries are not coincident in the studied section.


Middle Jurassic - Lower Cretaceous ammonites & aptychi
 
Jurassic Forum » JURASSIC references & paper reviews » Jurassic around the world » Dietze et al., 2012 (Ammonites and stratigraphy of a Lower Bajocian)
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