Section 7
Chapter 6,794

The vraconian upper albian deposit of la selva de bonansa spanish pyrenees stratigraphical paleo ecological and paleo bio geographic importance

Mongin, D.; Peybernes, B.; Souquet, P.; Thomel, G.

Palaeogeography Palaeoclimatology Palaeoecology 41(1-2): 45-64


ISSN/ISBN: 0031-0182
Accession: 006793006

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The Vraconian deposit (Upper Albian Stroliczkaia dispar zone) of La Selva de Bonansa in the South Pyrenean Zone (Spain), was revised. More than 50 spp. were found: ammonites, lamellibranchs, gastropods, brachiopods, echinoids and foraminifers. Some of these organisms belong to the North Temperate Realm and others to the Tethyan Realm. The deposit is situated on a hard-ground which was the external limit of the calcareous continental shelf, i.e., the equivalent upper circalittoral bathymetric zone and the external part of the infralittoral zone. This is shown by the associations of invertebrates. The fauna identified at Bonansa also shows the stratigraphical value of some species which lived only during the Late Vraconian, or in the Early Cenomanian, or crossing the Albian-Cenomanian boundary.

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