Isthmolithus recurvus Deflandre in Deflandre and Fert, 1954
Deflandre, G. & Fert, C. 1954. Observations on current and fossil coccolithophorids in ordinary and electron microscopy. Annales de Paléontologie 40: 115-176.
Isthmolithus recurvus
Deflandre in Deflandre & Fert, 1954
Oligocene
Oamaru Diatomite, New Zelland