The term "order Foraminifera" refers to a group of single-celled organisms with a complex and varied morphology. While commonly known as "forams," these microorganisms are also referred to as "foraminifers," "foraminifera," or simply "foramin." In terms of classification, the order Foraminifera is part of the phylum Rhizopoda, a group of amoeba-like organisms. Within the order Foraminifera, there are several suborders, families, and genera. Each has its own unique characteristics, such as the presence or absence of shells or the shape of their pseudopods. Despite their small size, foraminifera are critical in both the marine and terrestrial environments, serving as important indicators of environmental change.