450 MICROFOSSILS/Foraminifera Figure Summary of compositionally based groups of the Foraminifera, (modified after Loeblich and Tappan (1992), Sen Gupta (1999) and Kaminski (2004).) The ‘orders’ of Loeblich and Tappan (1992) are here regarded as informal groupings pending revision of their status The agglutinated Trochamminida and the Carterinida were included within the Lituolida by Kaminski (2004)