Monothalamea is a grouping of foraminiferans, single celled organisms, traditionally consisting of all foraminifera with single-chambered tests, or external shell. Recent work has shown that the group

Allogromiida is an order of single-chambered, mostly organic-walled foraminiferans, including some that produce agglutinated tests. Genetic studies indicate that some foraminiferans with agglutinated