This work demonstrates the potential of three-dimensional biometric quantification using microtomography on larger benthic foraminifera. We compare traditional linear and area measures used for calculating three-dimensional characters with actual 3D measurements made from volume images obtained using X-ray microtomography (microCT). | Growth rate biometric quantifi cation by X ray microtomography on larger benthic foraminifera: Three dimensional measurements push nummulitids into the fourth dimension