Faculty of Geology

An integrated inoceramid-foraminiferal zonation for the topmost Turonian and Lower Coniacian near Briansk, SW of
Moscow is presented. The inoceramid fauna enables the application of the refined zonal scheme currently applied in central
and western Europe. Three zones based on benthic foraminifera,.the Gavelinella moniliformis, Ataxophragmium nautiloides
and Stensioeina granulata granulata zones; and three zones based on planktonic foraminifera, the Whiteinella
archaeocretacea, Marginotruncana pseudolinneiana and Marginotruncana renzi zones, are distinguished. The Turonian/
Coniacian boundary, defined by the first appearance of the inoceramid Cremnoceramus deformis erectus (MEEK, 1877),
falls within the basal part of the Stensioeina granulata granulata Zone and the basal part of Marginotruncana renzi Zone. In
foraminiferal terms the Turonian/Coniacian boundary interval is marked additionally by a sudden, short-lived increase in
the plankton/benthos ratio, caused primarily by more abundant shallow-water morphotypes.

Keutgen, N., Remin, Z. and Walaszczyk, I. 2012. Early representatives of the belemnite genus Belemnella (Cephalopoda) from the uppermost Campanian-Lower Maastrichtian of the Middle Vistula River section, central Poland. Acta Geologica Polonica, 62 (4), 535-559. Warszawa. Representatives of the belemnite genus Belemnella from the uppermost Campanian and lowermost Maastrichtian of the Middle Vistula River Valley section (central Poland) have been studied, using the species concept proposed by Schulz in 1979. Results have been compared to a recently proposed new interpretation of the genus Belemnella based on artificial neural networks, as put forward by Remin in 2007 and 2012. In the interval studied, four taxa have been recognised: Bln. longissima, Bln. inflata, Bln. obtusa and Bln. vistulensis, the last-named being a senior synonym of Bln. pseudobtusa. Three additional forms have been left in open nomenclature: Bln. cf. lanceolata, Bln. ex gr. lanceolata/inflata and Belemnella sp. Based on their documented vertical ranges, three Belemnella standard zones, as originally distinguished in the Kronsmoor section by Schulz (1979), northern Germany, have been defined, in ascending order: the Bln. lanceolata, Bln. vistulensis and Bln. obtusa zones. The bases of the lanceolata and obtusa zones in the Middle Vistula River Valley section can be directly correlated with the same zones at Kronsmoor, and appear to be isochronous within limits of stratigraphic resolution. The base of the vistulensis Zone (Bln. vistulensis according to the species concept of Schulz in 1979), however, is probably diachronous, being older in the Middle Vistula section. Although Schulz's and Remin's species concepts differ quite considerably, they do result in similar stratigraphic subdivisions of the Kronsmoor and Middle Vistula River sections.

The Campanian strata in the Wolbrom-Miechów area at Wierzchowisko, Je˝ówka and Rze˝uÊnia (ie, the south-western part of the Miechów Trough, southern Poland) have been studied in some detail. Collections of macrofossils available to date include generally well-preserved and ...

A specimen of the Late Turonian marker ammonite Prionocyclus germari (Reuss, 1845) is recorded from the upper Nodular Limestone of the Bagh Beds sequence of the Hatni River section near Kukshi, Madhya Pradesh Province, India. A reappraisal of previous ammonite and inoceramid records from the sequence shows that these are all compatible with a Late Turonian date for the upper Nodular Limestone. The higher parts of the Bagh Beds are thus securely dated as Late Turonian to Coniacian on ammonite and inoceramid evidence.