Abstract
The “Podpe~ limestone” outcropping south of Ljubljana (Central Slovenia), deposited at the northern edge of the Dinaric Carbonate Platform, comprises mostly dark grey and black thick bedded oolitic limestone, and is renowned for several horizons of lithiotid bivalves. Foraminifera, especially Orbitopsella spp., are rather frequent, but no detailed distribution of foraminiferal taxa was given. Furthermore, documentation of foraminiferal species is scarce, with few photographs. In order to give a comprehensive picture of foraminiferal assemblage of the “Podpe~ limestone” and its distribution, three sections were measured in detail and sampled. The foraminiferal assemblage consists of 17 species, described in detail. On the basis of foraminifera, the investigated part of the “Podpe~ limestone” belongs to the Lituosepta recoarensis and Orbitopsella praecursor biozones of early Late Sinemurian and Early Pliensbachian age, respectively.
Highlights
The aim of this paper is to give a systematic account of foraminifera in the lithiotid bivalves-rich “Podpe~ limestone”, an informal Pliensbachian stratigraphic unit of central Slovenia, and to present their distribution in three
The Zalopate section spans the lower part of the “Podpe~ limestone”
Based on the presence of its nominal taxon, this part of the section belongs to the Lituosepta recoarensis zone of early Late Sinemurian age
Summary
Following the devastating effects of the alledged biocalcification crisis at the TriassicJurassic boundary in the Neotethys area (e.g., Hautmann et al, 2008; ^rne et al, 2011), the Early Jurassic saw a gradual reestablishment of shallow water benthic communities, in which agglutinated large benthic foraminifera played a prominent role (Septfontaine, 1988; Bassoullet, 1997; Mancinelli et al, 2005; BouDagher-Fadel & Bosence, 2007; Veli], 2007; BouDagherFadel, 2008). Transition from poorly diversified Hettangian fauna with small involutinids and pfenderinids into Sinemurian Siphovalvulinaand Textularia-dominated assemblages, and further from simple into internally complicated lituolids of the Pliensbachian is well recorded (BouDagher-Fadel, 2008), and provides a useful tool in biostratigraphic studies throughout the present-Mediterranean area (e.g., Septfontaine, 1984, 1988; Bassoullet, 1997; Mancinelli et al, 2005; BouDagher-Fadel & Bosence, 2007). Prerisano in prirejeno po Buser et al (1967) in Buser (1968)
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