Article: Wall structure of some agglutinated Foraminiferida

Present knowledge of agglutinated wall structure and composition is briefly reviewed. Examination of 19 recent species shows the existence of three wall types: simple imperforate wall with an organic cement; complex alveolar imperforate wall with an organic cement; 'perforate' wall with a calcareous cement. It is concluded that more attention should be paid to wall structure and composition in descriptions of species and in taxonomy. Forms with a calcareous cement seem to be stenohaline marine or hypersaline and therefore useful indicators of environment.