According to our findings, the event level coincides with the base of the Bairdia aculeata ostracode Zone in the carbonate-siliciclastic rocks of the Sargian Substage or with the upper boundary of the Eoparafusulina lutugini--Pseudofusulina juresanensis fusulinid Zone in the shallow reef deposits of the Irginian Substage.
concavutas fusulinid Zone, or the lower part of the Protolonsdaleiastraea juresanensis coral Zone (Figs.
The age was determined by the occurrence of Pseudofusulina Juresanensis--one of the fusulinid zonal species of the Irginian Substage.
The age of this unit corresponds to the Eoparafusulina lutugini--Pseudofusulina juresanensis fusulinid Zone of the Irginian Substage.
Just before the Parafusulina solidissima fusulinid Zone (= Bairdia aculeata ostracode Zone) the final disappearance of most of the fasciculate and massive colonial Rugosa, as well as the solitary corals with dissepiments, takes place.
gerthi, and the fusulinids Pseudofusulina urdalensis and Ps.
The Great Bear Cape Formation (Sverdrup Basin) comprises a shallowing succession of bioclastic carbonates with turned over colonial corals and reworked fusulinids, interpreted as tempestites resulting from high-energy events on an open, wave-swept shelf (Beauchamp & Theriault 1994).
The wackestones and packstones are very fossiliferous, and contain abundant brachiopods (Figure 4C), bivalves, some bryozoans, and fusulinid foraminifera (e.
The macrofossils, in particular, fusulinids, crinoids, bryozoans suggest a shallow marine environment for the limestones.