Contributions à la Paléontologie du Miocène Moyen continental du Bassin du Tage. I - Quelques mollusques - Pero Filho, Póvoa de Santarém, Sítio do Mirante

  • G. Truc

Abstract

Key words: Continental mollusks - ecology - middle Miocene
- Tagus'basin

Some land and freshwater mollusks (Gastropoda, Pelecypoda) from three middle Miocene localities: Pero Filho, Povoa de Santarem, Sítio do Mirante, all in Ribatejo province, Portugal, are summarily
studied.
On a systematical viewpoint it has been shown (see also Tableau): - the presence of the genus Janulus, whose species only survive now at Madeira and Canary's islands;
- the presence of "Helix" cotteri that may indeed belong in the genus Megalotachea, common in western Europe since "Helvetian" to Messinian times;
- Limax, Testacella, Acroloxus and Pseudamnicola are quoted for the first time in portuguese tertiary formations; Ferrisia has been identified for the first time in Iberian Peninsule;
- the presence of other forms previously quoted by ANTUNES & ZBYSZEWSKI (1973), is confirmed: Bithynia, Theodoxus.
Pisidium.
Such faunules are compatible with a middle Miocene age. On a paleobiogeographical viewpoint, some forms suggest mediterranean
affinities. .
Fossil associations do correspond ecologically to either palustrine or stagnant, calm and shallow water conditions (Sítio do Mirante, and essentially also Povoa de Santarem), or to fluviatile conditions (Pero Filho).

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How to Cite
TRUC, G.. Contributions à la Paléontologie du Miocène Moyen continental du Bassin du Tage. I - Quelques mollusques - Pero Filho, Póvoa de Santarém, Sítio do Mirante. Ciências da Terra / Earth Sciences Journal, [S.l.], v. 3, july 2008. ISSN 2183-4431. Available at: <http://cienciasdaterra.novaidfct.pt/index.php/ct-esj/article/view/47>. Date accessed: 16 feb. 2019.
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