Foraminiferal genera and their classification / Рода фораминифер и их классификация

The purpose of these volumes is to make availahle to those working with the Foraminiferida a systematic summary that includes the description and illustration of every validly described foraminiferal genus. Although we hope that this will be useful to foraminiferal workers at all levels, it is not intended as an introductory textbook, hence we have not included extensive separate discussions of foraminiferal morphology, ecology, life cycles, biostratigraphy, evolution, or economic use, topics that are addressed hy many excellent current publications. The systematic arrangement of genera is alphabetical within the various subfamily or family categories, and the family group taxa within the suborders are arranged in order of presumed evolutionary sequence or increasing complexity. Descriptions are generally focused on test morphology, both external and internal, but some information concerning the living organism is summarized for the few that are known. Geologic range is given to the level of the geologic series or epoch, and known geographic occurrence and a limited amount of ecologic information is included. In view of the very large number of taxa considered, morphologic descriptions are as concise as possible, consistent with the inclusion of the available information. Morphologic terms used are defined in the Glossary, in which reference also is given to other terms proposed by various writers. The plates of illustrations and the plate explanations are bound separately from the text, for greater convenience in comparing description and figures <...>