ABSTRACT
The meridional asymmetry in hydrological and biological structures of the oceans (provoked by the Earth’s rotation and Coreolis Power) is mainly expressed by the constant global upwellings of water in the east of the oceans, and by faunistic concentrations in the west of the oceans. During the ages hypertrophic conditions in moving spots of upwellings (with phytoplankton abundance and hypoxid gas regimes near the bottom and in the sediments) eliminated some taxa among benthic Invertebrates, particularly among articulate brachiopods. Recent inarticulate brachiopods do not show meridional asymmetry in their distribution. Palaeogeographical reconstruction for the Early Permian Ocean shows colder conditions in the Boreal Zone in the NW of the Ocean, as compared to the NE of the Ocean, because of hydrological global asymmetry.
